Preliminärrapport för provningsjämförelse 7- Stockholm, april 7 Del A Utgående kommunalt avloppsvatten, spikat Suspenderade ämnen, Glödrest Del B Utgående skogsindustriellt avloppsvatten, spikat Suspenderade ämnen, Glödrest, Grova partiklar (Susp7/Vira) Del C Rötslam Torrsubstans, Glödrest, ph, alkalinitet I preliminärrapporten är resultaten redovisade i figur- och tabellform här följer några förklaringar för tabellrubrikerna: Mean Stdev Range CV% n Excl. medelvärde, konsensus standardavvikelse max min variationskoefficient antal värden i de statistiska beräkningarna uteslutna resultat (outliers, mindre-än värden) Youdendiagram Analysresultaten representeras av värdepar Sample + Sample. Talparens placering visar ifall resultaten innehåller systematiska eller slumpmässiga avvikelser. Ett cirkelformat spridningsmönster indikerar en slumpmässig fördelning utan påtagliga systematiska fel. Är spridningsmönstret däremot samlat utefter 5 linjen är materialet behäftat med systematiska avvikelser. Histogram (eller frekvensdiagram) Hela värdeintervallet är uppdelade i ett antal del-intervall. Stapelhöjden motsvarar antalet mätvärden i del-intervallet. En normal fördelning av det statistiska materialet är jämn och symmetrisk med högsta antalet mätvärden i närheten av medelvärdet. En asymmetrisk fördelning eller flera tydliga maxima tyder på komplikationer som kan bero metoder, homogenitet eller dylikt. Kriterier för beräkning av z-scores i denna rapport För parametrar med minst sex godkända resultat beräknas z-score om proverna bedöms vara homogena och stabila m.a.p. den aktuella parametern. För parametrar med fyra eller fem godkända resultat beräknas z-score om CV% (standardavvikelse /medelvärde) är mindre än % och det finns högst ett outlier. Mindre-än värden och uppenbara rapporteringsmissar räknas inte som outliers. Inga z-scores beräknas för parametrar som inte uppfyller villkoren. För dessa presenteras endast deltagarnas resultat samt, beroende på antal resultat och spridning, eventuellt även grundläggande statistik och Youden-diagram utan konfidensintervall. Vänligen, meddela oss om du upptäcker misstag vi kan ha gjort i preliminärrapporten så vi kan rätta till dem i slutrapporten. Slutrapporten beräknas vara klar senast vecka. ACES Provningsjämförelser Stockholms universitet 9 Stockholm Sweden Hemsida: http://enviropro.itm.su.se Marsha Hanson: marsha.hanson@aces.su.se Marcus Sundbom: marcus.sundbom@aces.su.se
Preliminary Report for Proficiency Test 7- Stockholm, April, 7 Part A Treated municipal wastewater Total suspended solids, Fixed suspended solids Part B Treated paper industry wastewater Total suspended solids, Fixed suspended solids, Susp7 Part C Digested sludge Dry solids, Fixed solids, ph, alkalinity Results in the preliminary report are shown in tables and charts. Explanations for the abbreviations used in the table heads and translations for some key words: Mean Stdev Range CV% n Excl. average, consensus standard deviation max min coefficient of variation number of values used in the statistical calculations excluded values (outliers, less-than values) Youden plots The results are represented as value pairs with sample plotted against sample. The position of the value pairs reveals both systematic and random errors. Data scattered circularly around the intersection of the means are randomly distributed with no specific systematic errors. Data distributed along the 5 axis indicate the presence of systematic errors. Histograms (or frequency diagrams) The result range is divided into equal intervals along the x-axis with each bar representing the number of results in that interval. A normal statistical material is characterised by an even, symmetrical distribution with the majority of data centred around the mean. An asymmetric distribution or more than one obvious maximum indicates complications, for example with the methods or homogeneity. Criteria for the calculation of z-scores in this report For parameters with at least six acceptable results, z-scores are calculated if the samples are homogenous and stabile with respect to that parameter. For parameters with four or five acceptable results, and no more than one outlier, z-scores are calculated if the CV% (standard deviation/mean) is less than %. Less-than values and obvious clerical errors are not counted as outliers. No z-scores are calculated for parameters that do not fulfil the above conditions. Only the results of the participants are presented. Basic statistics and the Youden plot (without the confidence interval) may be included depending on the number of participants and the distribution. Kindly inform us of errors we may have made in the preliminary report so we can correct them in the final report. A final report can be expected by May 9. ACES Proficiency Tests Stockholm University SE- 9 Stockholm Sweden Website: http://enviropro.itm.su.se Marsha Hanson: marsha.hanson@aces.su.se Marcus Sundbom: marcus.sundbom@aces.su.se
Preliminär Rapport Provningsjämförelse 7- Suspenderade ämnen och slam Proficiency Test 7- Suspended solids and sludge Marsha Hanson Marcus Sundbom ACES, Stockholms universitet
Innehåll / Table of Contents STR Suspenderade ämnen / Total suspended solids... SFR Glödrest / Fixed solids... S7 Grova partiklar (Susp7/Vira) / Susp7... 5 TS Torrsubstans / Dry solids... 8 TFR Glödrest (slam) / Dry fixed solids (sludge)... ph ph (slam) / ph (sludge)... Alk Alkalinitet (slam) / Alkalinity (sludge)... 7 Provmatriser / Sample matrices A Kommunalt avloppsvatten, spikat Municipal wastewater, spiked B Skogsindustriellt avloppsvatten, spikat Paper industry wastewater, spiked C Rötslam Digested sludge
STR Suspenderade ämnen / Total suspended solids Analyskoder & metoder STR-STG Glasfiberfilter. Torkat i 5 C. SS 8 (upphävd); SS-EN 87:5 STR-STM Membranfilter (.5 µm). Torkat i 5 C. SNV (SEPA) STR-XX Annan metod. Ange standard eller beskriv metoden. Analysis codes & methods STR-STG Glass fiber filter. Dried at 5 C. SS 8 (upphävd); SS-EN 87:5 STR-STM Membrane filter (.5 µm). Dried at 5 C. SNV (SEPA) STR-XX Other method. Specify standard or describe the method.
Sample A, <=.8.55..885.57.55.9 5.5. >. <=9.5.55.98.75..55.88.5 5. >5. STR Del A / Part A STR Sample A Total.5.7.9 5.8. 9 STG..7..9 9.8 STM. XX.9.9.. 5. 8 STR Sample A STR Sample A Total.8.. 5.5 9.9 9 STG.... 8.8 STM. XX...97..77 8 STR Sample A STR Part A Youdendiagram normal systematic error % 7 5 95% conf. Mean Mean 5º STG STM XX 9 9 5 7 Sample A,
STR Del A / Part A Lab Method Sample Z-score Excl. Sample Z-score Excl. 7 STG.5. 5.. 8 STG.5..8. 7 STG.7..9 -. 7 XX 5.... 9 STG..8 5..55 STG.7. STG. -.. -.5 STG. -.9. -.5 9 STG..5. -.5 5 STG.5...98 5 STG..7. -.9 STG. -.75. -. 7 STG. -.97.5.7 89 STG..5..98 9 STG 9. -.7.5 -. 97 XX. -.9. -.79 7 STG...8.5 STG. -.. -.7 STG.9.97.9 -. STG.5.78.5. 5 STG....98 STG.9... STG.7 -... 7 STG. -.97.9 -.8 75 STG. -... 8 STG.5 -.. -.7 STG.5 -..8 -. STG.5 -..7 -.9 STG. -.5.95 -. 8 STG. -.7.7. 7 STM -.8 -.9 STG.5 -.9.5 -. 9 STG. -.5. -.79 5 STG -. -.7 8 STG.7 -.7 87 STG. -.5. -. 5 STG. -.5. -.7 9 STG.7... STG..5.5.8 STG..8.. STG. -.97. -.79 5 STG.7.8.7. STG..8.5.7 5 STG.7.. -.7 7 STG..58.8. 7 STG.. 5.7 7 STG.5 -.9. -. 7 STG..7..7 7 STG.5 -.. -. 5
STR Del A / Part A z-score for STR - - - - Lab Code (Method) (STG) 5 (STG) 9 (STG) 7 (STG) (STG) (STG) 7 (STM) (STG) 7 (STG) (STG) 8 (STG) 9 (STG) 97 (XX) 5 (STG) 87 (STG) 5 (STG) (STG) (STG) 75 (STG) (STG) 7 (STG) 7 (STG) (STG) 8 (STG) 5 (STG) (STG) 9 (STG) 7 (STG) 8 (STG) 9 (STG) (STG) (STG) (STG) 7 (STG) (STG) (STG) 5 (STG) 7 (STG) 89 (STG) 5 (STG) 7 (STG) (STG) 5 (STG) (STG) 8 (STG) 7 (STG) 9 (STG) 7 (STG) 7 (XX) z-score Sample z-score Sample Unsatisfactory Questionable
Sample B, <=.5. 5.5 7.5 9.95..85 7. 9.75 >9.75 <=.75. 8.5..55 8.5 5.9 5.5 >5.5 STR Del B / Part B STR Sample B Total.77..7 9.5 8.8 8 STG.8.. 9. 7.78 STM 8. XX 5.5 8 8 STR Sample B STR Sample B Total 8.7 8..5 9..78 8 STG 8. 8.55. 9.. STM. XX 8. 8 STR Sample B STR Part B Youdendiagram small systematic error 5% 5 5 8 8 8 8 8 5 5 5 5 Sample B, 95% conf. Mean Mean 5º STG STM XX 7
STR Del B / Part B Lab Method Sample Z-score Excl. Sample Z-score Excl. 7 STG.5 -.7.. 7 XX 5.5. 8.. 9 STG 5...9. STG. 8 -. 7 STG 9.. 9 STG. -.7.9.7 5 STG.9 -..5 -.9 75 STG. -.. -. 89 STG.. 5..8 95 STG. -.. -. 99 STG..8 STG..7 8. -. 7 STG.7 -... STG 9. -.8 8.5 -.5 STG.9 -.9.8.5 5 STG. -. 8. -. 8 STG 5.8. STG.8. 7.7 -. 7 STG.8.8 8. -. STG 5.5.7.7 -.87 8 STG 7.87 7.5 -. 9 STG.8 -.5 8. -. STG 5.7.5 9..5 STG 5.7.5 9..5 STG 8....5 7 STM 8 -.55.7 STG.7 -..5.9 5 STG 9 -.8 8 -. 55 STG. -.7 5. -.7 STG 5.9.57 8. -. STG -..5 STG.9 -.77 5. -.77 7 STG.7 -.9. -.8 9 STG 9 -.8 -.5 99 STG. -.8.75 -.5 STG 5. -.59 STG.8 -.8 7.5 -. STG.55 -. 5.8 -.7 5 STG -.8 -. STG 5..5 8.. 9 STG 8 -.55 -.7 STG.7 -.5. -. STG.9.. -.7 STG.8 -.5 8.8. 7 STG.9.8 9.. 7 STG.7 -.5 8.8. 7 STG 8.7..9. 7 STG 8.9.8 5..8 8
STR Del B / Part B z-score for STR - - - - Lab Code (Method) 95 (STG) 9 (STG) 9 (STG) 7 (STG) 99 (STG) (STG) 75 (STG) (STG) 5 (STG) 5 (STG) (STG) 55 (STG) (STG) (STG) 5 (STG) (STG) 7 (STM) 9 (STG) 7 (STG) (STG) (STG) (STG) (STG) 5 (STG) (STG) 7 (STG) (STG) (STG) (STG) 9 (STG) 99 (STG) (STG) 7 (STG) (STG) 8 (STG) (STG) (STG) 7 (STG) 7 (STG) 9 (STG) 7 (STG) 89 (STG) (STG) 7 (STG) 8 (STG) 7 (STG) (STG) 7 (XX) z-score Sample z-score Sample Unsatisfactory Questionable 9
SFR Glödrest / Fixed suspended solids Analyskoder & metoder SFR-STG Glasfiberfilter. Bränt i 55 C. SS 8 (upphävd); SS-EN 87:5 SFR-XX Annan metod. Ange standard eller beskriv metoden. Analysis codes & methods SFR-STG Glass fiber filter. Ignited at 55 C. SS 8 (upphävd); SS-EN 87:5 SFR-XX Other method. Specify standard or describe the method.
Sample A, <=.5 7. 8.7 9.8.9. >. <=5.5.75 7.85 8.95.5.5.5 >.5 SFR Del A / Part A SFR Sample A Total.7...5 5. 7 STG.5.5..5 5.85 XX.7 SFR Sample A Total.77.9.9.59 5.7 8 STG.77..7.59. 7 XX.7 7 5 7 5 SFR Sample A SFR Sample A SFR Part A Youdendiagram large systematic error 7% 5 9 8 95% conf. Mean Mean 5º STG XX 7 5 5 7 8 9 5 Sample A,
7 (STG) 8 (STG) 5 (STG) (STG) (STG) (STG) (STG) 7 (STG) 97 (XX) 7 (STG) (STG) 7 (STG) 7 (STG) 7 (STG) (STG) (STG) (STG) 5 (STG) z-score for SFR SFR Del A / Part A Lab Method Sample Z-score Excl. Sample Z-score Excl. 7 STG..5.9.7 STG.. STG 9. -.79. -. STG.... 5 STG.75.8.. 97 XX.7..7 -. 7 STG..9..9 STG 9.7 -.8. -. STG.8.8..75 STG. -.9. -.5 8 STG 5.75 -.9. -.5 STG.5 -..5 -. 5 STG 8.5 -. 8.7 -. STG...5. 7 STG..7.5 -. 7 STG.9.9..5 7 STG.9 -.7 X 8. -.58 7 STG 9.8 -...7 z-score Sample z-score Sample Unsatisfactory Questionable - - - - Lab Code (Method)
Sample B, <=.5 7.7 9.5..75. >. <=7. 8. 9.... >. SFR Del B / Part B SFR Sample B Total 9.97 9.97.8 5. 8. STG 9.97 9.97.8 5. 8. SFR Sample B SFR Sample B Total 9. 9.95.7.8.99 8 STG 9. 9.95.7.8.99 8 SFR Sample B SFR Part B Youdendiagram small systematic error 5% 7 5 9 8 7 95% conf. Mean Mean 5º STG 5 5 7 8 9 5 7 Sample B,
9 (STG) (STG) (STG) (STG) (STG) 7 (STG) 7 (STG) 8 (STG) 7 (STG) 5 (STG) z-score for SFR SFR Del B / Part B Lab Method Sample Z-score Excl. Sample Z-score Excl. STG 8. -.88. 5 STG.5.85 X..8 X 7 STG.7. 8. -.5 STG. -.9 X.9 -. 8 STG.8.59..98 STG.8. 8.8 -. 9 STG. -. X.8 -. X STG 7.7 -..5 -. 7 STG 9.8 -. 9.7.7 7 STG..78 X..7 z-score Sample z-score Sample Unsatisfactory Questionable - - - - Lab Code (Method)
S7 Grova partiklar (Susp7/Vira) / Susp7 Analyskoder & metoder S7-STV Vira-duk filter (~7 µm). Torkat i 5 C. SS 88 Analysis codes & methods S7-STV "Vira"-mesh filter (~7 µm). Dried at 5 C. SS 88 5
Sample B, <=9.9.5..5.5 >.5 <=.7 7.5 8.8 8.755 9. >9. S7 Del B / Part B S7 Sample B Total 8. 8...7. STV 8. 8...7. S7 Sample B S7 Sample B Total.7.5.8. 8. STV.7.5.8. 8. S7 Sample B S7 Part B Youdendiagram very small systematic error % 9 8 7 5 95% conf. Mean Mean 5º STV 9 8 7 5 5 7 8 9 5 Sample B,
(STV) 55 (STV) 9 (STV) 7 (STV) 7 (STV) 9 (STV) z-score for S7 S7 Del B / Part B Lab Method Sample Z-score Excl. Sample Z-score Excl. 7 STV 8.9.75. -. 9 STV 9.5... 55 STV 7. -.9. -.5 9 STV 8 -. -.9 STV.8 -.. -. 7 STV 8.... z-score Sample z-score Sample Unsatisfactory Questionable - - - - Lab Code (Method) 7
TS Torrsubstans / Dry solids Analyskoder & metoder TS-FT Torrsubstans total, frystorkat. SNV TS-ST Total torrsubstans vid 5 C. SS 8; SS-EN 88 TS-XX Annan metod. Ange standard eller beskriv metoden. Analysis codes & methods TS-FT Total solids (the residue) freeze-dried sample. SEPA SNV TS-ST Total solids (the residue) at 5 C. SS 8; SS-EN 88 TS-XX Other method. Specify standard or describe the method. 8
Sample C, % <=.5.5.95.5.85.8.975. >. <=.575.55.585.5.95.55.755.985 >.985 TS Del C / Part C TS Sample C % Total.5..7.. FT ST.8..5..5 9 XX.555.555.7..8 9 8 7 5 TS Sample C TS Sample C % Total.779.8.5. 9. FT. ST.7.8.59. 9. 9 XX.95.95...7 9 8 7 5 % TS Sample C % TS Part C Youdendiagram very small systematic error 5%......9.8.7..5......9......5..7.8.9.... Sample C, % 95% conf. Mean Mean 5º ST XX 9
8 (ST) (ST) 7 (ST) (ST) 5 (ST) 7 (ST) (ST) 8 (ST) 97 (XX) 7 (ST) (XX) (ST) (ST) (ST) (ST) 5 (ST) 8 (ST) 9 (ST) (ST) 9 (ST) 8 (ST) (ST) (ST) 5 (ST) 9 (ST) 8 (ST) 9 (ST) 5 (ST) (ST) (ST) (ST) (FT) z-score for TS TS Del C / Part C Lab Method Sample Z-score Excl. Sample Z-score Excl. ST.55 -.9..9 7 ST...5 -.95 8 ST.58 -.7. -. ST...5 -. ST.5 -.77.77 -. ST.59 -..9.5 ST.59 -...9 5 ST.58 -.7.57 -.8 5 ST..9.5 -.87 7 ST.59 -.. -.8 8 ST.59 -..98.8 97 XX.55 -.9.9. ST.59 -..8.8 ST...8. ST..5.. 8 ST. -..8.8 9 ST. -..8.8 ST.5... ST.58 -.7. -. 8 ST...5 -. ST...58 -.9 8 ST.5..99.8 9 ST.5.55.997.87 9 ST.59 -..9.5 9 ST.5... ST.5 -..9.5 5 ST..9..5 ST.7..8.8 FT.9 8.7 X..88 5 ST..9.7 -.7 7 ST.58 -.7. -.7 XX.5 -..9.8 z-score Sample z-score Sample Unsatisfactory Questionable - - - - Lab Code (Method)
TFR Glödrest (slam) / Dry fixed residue (sludge) Analyskoder & metoder TFR-ST Total substans. Glödrest efter bränning i 55 C. SS 8; SS-EN 879 TFR-XX Annan metod. Ange standard eller beskriv metoden. Analysis codes & methods TFR-ST Total fixed solids ignited at 55 C. SS 8; SS-EN 879 TFR-XX Other method. Specify standard or describe the method.
Sample C, % <=.99.5.7 5.55 5. 5.75..75 >.75 <=.5.7.5..95 5..5.9 >.9 TFR Del C / Part C TFR Sample C % Total.85 5..7..7 9 ST.8 5..8.. 8 XX 5.8 9 8 7 5 TFR Sample C TFR Sample C % Total 5.9 5..5.8. 8 ST 5.9 5..57.8. 7 XX 5. 8 % TFR Sample C % TFR Part C Youdendiagram very small systematic error 5% 8. 7.5 7..5. 5.5 5..5..5 95% conf. Mean Mean 5º ST XX..5..5..5..5..5 5. 5.5..5 7. 7.5 Sample C, %
(ST) 8 (ST) (ST) 5 (ST) (ST) 8 (ST) 9 (ST) (ST) 5 (ST) 9 (ST) 5 (ST) (ST) 9 (ST) (ST) 9 (ST) 7 (ST) (ST) (XX) 7 (ST) 8 (ST) (ST) 7 (ST) (ST) 5 (ST) (ST) 8 (ST) (ST) (ST) 97 (ST) z-score for TFR TFR Del C / Part C Lab Method Sample Z-score Excl. Sample Z-score Excl. ST. -.7.9 -. 7 ST 5.. 5..9 8 ST. -.58.8 -.5 ST 5.5. 5.. ST. -. 5..9 ST.7. 5.7. ST 5..7 5.8. 5 ST 5.8.5 5.. 5 ST.9.5.8 -.5 7 ST 5..5 5..7 8 ST 5.7.8 5..9 97 ST.7.77..8 ST.7 -..5 -. ST 5.. 5.. 9 ST.5 -.. -.59 ST 5..5 5.. ST 5.. 5.7. 8 ST 5.9. 5.7. ST.7 -.7.5 -.9 8 ST. -.. -. 9 ST.989. 5..5 9 ST.9.5.7 -.7 9 ST 5.. 5. -.7 ST...5.5 5 ST -.8 5 -.7 ST. -.58. -5. X 5 ST. -.8. -.59 7 ST 5..5 5..9 XX 5.8.59 5..8 z-score Sample z-score Sample Unsatisfactory Questionable - - - - Lab Code (Method)
ph ph (slam) / ph (sludge) Analyskoder & metoder PH- Elektrometrisk bestämning vid grader C. SS 8 mod.; SS-EN ISO 5: PH-5 Elektrometrisk bestämning vid 5 grader C. SS 8; SS-EN ISO 5: PH-K Kontinuerlig mätning, elektrometrisk, temperaturkompenserad. SS 8; SS-EN ISO 5: PH-R Elektrometrisk bestämning vid rumstemperatur. SS-EN ISO 5: PH-XX Annan metod. Ange standard eller beskriv metoden. Analysis codes & methods PH- Electrometric measurement at degrees C. SS 8 mod.; SS-EN ISO 5: PH-5 Electrometric measurement at 5 degrees C. SS 8; SS-EN ISO 5: PH-K Continuous measurement, electrometric, temperature compensation. SS 8; SS-EN ISO 5: PH-R Electrometric measurement at room temperature. SS-EN ISO 5: PH-XX Other method. Specify standard or describe the method.
Sample C, <=7.9 7.9 7.9 7.59 7.9 7.79 7.89 7.99 >7.99 <=7.95 7.85 7.795 7.57 7.85 7.7 7.8575 7.95 >7.95 ph Del C / Part C ph Sample C Total 7.57 7.5.7..9 7.5 7.595.7.. 5 7.57 7.5.97.5.9 9 K 7.5 7.5... R 7.7 7.5.5..5 XX 7.7 7.7.7.. 5 ph Sample C ph Sample C Total 7.5 7.5.57.7.8 7.58 7.58.8..8 5 7.5 7.5.9.. 9 K 7. 7..55..5 R 7. 7.5... XX 7.75 7.7.9.5.9 8 7 5 ph Sample C ph Part C Youdendiagram very large systematic error 8% 8. 8. 7.9 7.8 7.7 7. 7.5 7. 7. 95% conf. Mean Mean 5º 5 K R XX 7. 7. 7. 7. 7. 7. 7.5 7. 7.7 7.8 7.9 8. 8. Sample C, 5
5 (R) 8 () 9 (5) 5 (K) 9 (5) 5 (5) (5) (5) 7 (R) 8 (5) (R) 97 (5) 7 () 5 () (XX) (5) 8 (5) 9 () (XX) (K) (XX) z-score for ph ph Del C / Part C Lab Method Sample Z-score Excl. Sample Z-score Excl. 8 5 7.5 -. 7.9 -. XX 7.7.8 7.7.88 XX 7..8 7.55 -.8 5 7.5 -.5 7.5 -. 5 K 7.7 -.7 7. -.9 5 7..8 7.55 -.8 7 R 7.5 -.5 7.5 -. 97 5 7..8 7.55 -.8 5 7.7.8 7.. 8 7. -.8 7.8 -.9 5 7.8 -. 7.5 -.7 K 7.8.5 7.78.9 8 5 7.7.5 7.7. 9 7.5.5 7.75. 9 5 7.5 -.8 7.5 -.7 9 5 7.5 -.8 7. -.97 R 7..8 7.5 -.7 5 5 7.5 -.8 7.7 -.59 5 R 7. -.8 7. -.7 7 7.5 -.9 7.. XX 7.9. 8..79 z-score Sample z-score Sample Unsatisfactory Questionable - - - - Lab Code (Method)
Alk Alkalinitet (slam) / Alkalinity (sludge) Analyskoder & metoder ALK-HACH Bestämt enligt Hach eller liknande metod. HACH 8 ALK-NN5 Karbonatalkalinitet: slutpunkt ph 5.. Titrimetrisk bestämning med indikator. SS-EN ISO 99- ALK-NP Total alkalinitet: slutpunkt ph.5. Titrimetrisk bestämning. Potentiometriskt slutpunktsbestämning med ph-meter eller liknande. SS-EN ISO 99-; Standard Methods B ALK-NP5 Karbonatalkalinitet: slutpunkt ph 5.. Titrimetrisk bestämning. Potentiometriskt slutpunktsbestämning med ph-meter eller liknande. SS-EN ISO 99- ALK-XX Annan metod. Ange standard eller beskriv metoden. Modifierats enligt ALK-XX: Slutpunkt mellan och.5 ALK-XX5: Slutpunkt mellan 5. och 5.75 Analysis codes & methods ALK-HACH Procedure according to Hach or equivalent method. HACH 8 ALK-NN5 Carbonate alkalinity: endpoint ph 5.. Titrimetric determination with indicator. SS-EN ISO 99- ALK-NP Total alkalinity: endpoint ph.5. Titrimetric determination. Potentiometric endpoint determination with ph-meter or equivalent. SS-EN ISO 99-; Standard Methods B ALK-NP5 Carbonate alkalinity: endpoint ph 5.. Titrimetric determination. Potentiometric endpoint determination with phmeter or equivalent. SS-EN ISO 99- ALK-XX Other method. Specify standard or describe the method. Modified to ALK-XX: Endpoint between and.5 ALK-XX5: Endpoint between 5. and 5.75 7
Sample C, mmol/l <=9.5. 8.85..5. 7.85 5. >5. <=89. 9... 7... 8. >8. Alk Del C / Part C ALK Sample C mmol/l Total 8..8. 9..5 HACH 9. NN5.5.5...7 NP.9.. 7..9 NP5 7. 98.... XX.5.8 5. 7.5. 7 XX5 7.7...9 5.8 9 8 7 5 ALK Sample C mmol/l ALK Sample C mmol/l Total 5. 8.8 5.9 5.9.8 HACH 95. NN5 9. 9..8..59 NP.7 8.5..5. NP5... 8. 9.77 XX...8 5.7.5 7 XX5 5. 5..7..5 ALK Part C Youdendiagram very large systematic error 89% 55 8 7 5 ALK Sample C mmol/l 5 5 5 5 5 5 95 9 95% conf. Mean Mean 5º HACH NN5 NP NP5 XX XX5 85 8 75 7 75 8 85 9 95 5 5 5 5 5 5 Sample C, mmol/l 8
8 (HACH) 5 (HACH) (NP5) (NP5) 97 (NP) 7 (XX) 5 (XX5) 8 (NN5) 5 (NP5) (XX) 8 (XX) (NP) (NP) 9 (NN5) 7 (XX5) (XX5) (XX) 7 (XX) 9 (XX) 5 (XX) (NP5) z-score for ALK Alk Del C / Part C Lab Method Sample Z-score Excl. Sample Z-score Excl. 8 NN5 -.5 7 -.5 XX5.5.9 7..7 XX.8.8 7.8. NP5 9.98 -.5 97.87 -.8 NP. -. 8.5 -. 5 NP5.5 -. 7. -.5 5 HACH 9. -.5 95. -. 7 XX 8.7... 97 NP 9.9 -.8. -.79 NP5 9..95 8 XX. -.5.5 -. XX. -.9. -.55 8 HACH.5 -.7 X. -.5 X 9 NN5 -.9 -.5 9 XX 9.. 7.9. 5 XX5. -.5.7 -.7 5 XX 5.5.87 8.7.9 7 XX 98 -.7 -.7 7 XX5. 5. NP5 95 -.9 -.88 NP -. 9 -.8 z-score Sample z-score Sample Unsatisfactory Questionable - - - - Lab Code (Method) 9
ACES Institutionen för miljövetenskap och analytisk kemi Department of Environmental Science and Analytical Chemistry 7