INVESTIGATION OF LAKE HÖRNTRÄSKET, LYCKSELE KOMMUN

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Ellinor Henriksson
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1 2005/01/20 INVESTIGATION OF LAKE HÖRNTRÄSKET, LYCKSELE KOMMUN Prepared by: Audrone Zaliauskiene Repport No 0501K50 Telefon:

Passive water sampling using DGT Passive water sampling is a sampling method that has advantages as monitoring tool because of its low expences, simplicity, long-term operatio and the fact that it

2 Passive water sampling using DGT Passive water sampling is a sampling method that has advantages as monitoring tool because of its low expences, simplicity, long-term operatio and the fact that it does not require electricity. EMD (Exposmeter metals) is based on DGT technology (diffusive gradients in thin films). It represents one of the passive sampling methods used for: For measuring, trace metals, phosphate, sulphide and radionuclides. Measures average concentrations (hours to weeks) in freshwaters and seawater. Measures both fluxes and concentrations in soils and sediments. Measures effective hazardous concentrations (bioavailable fraction). Measures at high spatial resolution (microns to centimetres). EMD can be obtained in two configurations: 1. EMD for the sampling in water 2. EMD sediment probe for the sampling in sediments Simple, but precision plastic EMD devices accumulate dissolved substances in a controlled way. Conventional analysis in the laboratory provides the in situ concentration at the time of deployment. membrane filter diffusive gel resin layer outer sleeve with window Figure 1. EMD device piston EMD sediment probe fabricated as slim probe can be inserted into the sediment. The simple plastic DGT device is deployed for a known time and then the mass of metal on the resin layer is measured after elution with acid by, for example, AAS or ICP-MS. Providing the temperature is known, the interfacial concentration in solution can be calculated precisely. Telefon:

figures 3 and 4. (IN) 2. Sampling in the deep areas in the lake.

3 Figure 2. EMD sediment probe Sampling using EMD in lake HÖRNTRÄSKET Sampling locations Sampling locations were according project goal: 1. Sampling in the inflow into the lake places chosen according orhotographic map presented in figures 3 and 4. (IN) 2. Sampling in the deep areas in the lake. EMDs were deployed at different levels. (DA) 3. Sampling in the drill areas. EMDs were deployed at the different levels Figure 3. Orhotographic map of west side of the lake. Inflows are marked with red colour, sampling places marked in green. Telefon:

Sampling time First EMDs were deployed during first week of April in 71 locations.

4 Figure 4. Orhotographic map of west side of the lake. Inflows are marked with red colour, sampling places marked in green. Sampling time First EMDs were deployed during first week of April in 71 locations. Lake was covered by ice (in average 1 m thick during the sampling). EMDs were sampling continuously during 4 weeks trouly dissolved metals in water. Figure 5. Sampling in deep areas. EMDs tighten to the rope at the different levels. Telefon:

5 Figure 6. Example of EMDs deployment EMD sediment probes were deployed in April in sediment core taken deep areas. EMD sediment probes have sampled continuously metals the sediments for 36 hours. Second set of EMDs were deployed in lake 16 of July. EMDs were retrieved after four weeks. Figure 7. EMD sampling in summer time Telefon:

EMDs were deployed in ground water well during July 15-16. EMDs were retrieved after four weeks. Figure 8.

6 EMDs were deployed in ground water well during July EMDs were retrieved after four weeks. Figure 8. EMD sampling in ground water wells Detail deployment procedure description EMD were removed the sealed plastic bag prior the deployment. EMD was deployed by attaching a >0,4mm thick fishing line to the small hole in the base. Unit was deployed in lake m under the ice to avoid physical damage due to the contact with the ice. Ancer was attached at the end of fishing line to ensure that the white face of the EMD unit is fully immersed during the whole deployment period. Deployment time and the temperature of the water during deployment were recorded using Multisensor probe. Also other basic parameters such as ph were measured. Detail retrieval procedure description On retrieval of the holding assembly, EMD unit was immediately (minutes) removed, taking care not to touch the face filter. EMD unit was rinsed with a stream of distilled/deionised water a wash-bottle and shacked off obvious surface water (without drying it). EMD was placed in a clean plastic bag and sealed with minimum air space. Sample details were marked on the bag. EMDs were send to the laboratory for analysis. Telefon:

7 Analysis procedure Resin gel EMD was treated with 1M HNO 3 solution before analysis. Analysis of extract was performed with ICP - AES, ICP - SFMS, AFS Samples ID and coordinates Table 1. Spring samples ID and coordinates Sample ID Coordinaters Sample ID Coordinaters X Y Number of samples X Y Number of samples IN IN015A IN002B IN015B IN002C IN016A IN002A IN016B IN003A IN016C IN003B IN016D IN003C IN017E IN003D IN018A IN004A IN018B IN004B IN018C IN005A IN018C IN005B IN018D IN005C IN019A IN005D IN019B DA3A IN019C DA3B IN020A DA2A IN020B DA2B IN021A IN006A IN021C IN006B IN021E IN006C IN022B IN007A IN022A IN007B IN022C IN007C IN IN007D IN IN/DA007E IN DA IN IN008A IN IN008B IN DA5A IN029A IN IN029B Telefon:

8 Sample ID Coordinaters Sample ID Coordinaters X Y Number of samples X Y Number of samples IN DA004A IN DA004B IN DR001A IN DR001B IN DR002A DA1A DR002B DA1C IN Table 2. Summer samples ID and coordinates Coordinates Number of samples X Y SM SM SM SM SM SM SM GW GW GW GW GW GW GW GW Telefon:

9 Results Spring sampling Table 3. Metal concentrations in inflow EMD samples SAMPLE Fe 0,5 Al 0,5 As 0,5 Ba 0,5 Cd 0,5 Co 0,5 Cr 0,5 Cu 0,5 Mn 0,5 Ni 0,5 Pb 0,5 INOO IN002A IN002B IN002C IN003A 4 14 ND IN003B 4 12 ND IN003C 4 13 ND IN003D 3 12 ND IN004A IN004B 3 11 ND IN005A IN005B IN005C IN005D 6 22 ND IN006A IN006B IN006C IN007A IN007B IN007C IN007D IN008A IN008B IN IN IN IN IN IN ND IN IN015A 3 14 ND IN015B 2 10 ND IN016A IN016B IN016C IN016D IN017E IN018A 2 13 ND IN018B IN018C µg/l Zn 0,5 Telefon:

10 SAMPLE Fe 0,5 Al 0,5 As 0,5 Ba 0,5 Cd 0,5 Co 0,5 Cr 0,5 Cu 0,5 Mn 0,5 Ni 0,5 Pb 0,5 IN018D IN019A IN019B IN019C IN020A IN020B IN021A 2 11 ND IN021C IN021E IN022A IN022B IN022C 2 13 ND IN IN ND IN ND IN IN IN IN029A IN029B 2 7 ND Table 4. Metal concentrations in deep areas and drill areas EMD samples µg/l Zn 0,5 SAMPLE Fe 0,5 m Fe 1,5 m Fe 0,5 m Fe 0,2 m Al 0,5 Al 1,5 Al 0,5 Al 0,2 As 0,5 As 1,5 As 0,5 As 0,2 IN/DA007E DA1A ND DA1C DA2A DA2B DA3A DA3B DA004A ND ND 0.1 DA004B ND 0.2 DA ND DA5A ND DR001A DR002A ND ND 0.01 DR001B DR002B ND ND µg/l Telefon:

11 SAMPLE Ba 0,5 m Ba 1,5 m Ba 0,5 m Ba 0,2 m Cd 0,5 Cd 1,5 Cd 0,5 Cd 0,2 Co 0,5 Co 1,5 Co 0,5 Co 0,2 IN/DA007E DA1A DA1C DA2A DA2B DA3A DA3B DA004A DA004B DA DA5A DR001A DR002A DR001B DR002B SAMPLE Cr 0,5 m Cr 1,5 m Cr 0,5 m Cr 0,2 m Cu 0,5 µg/l Cu 1,5 Cu 0,5 Cu 0,2 Mn 0,5 Mn 1,5 Mn 0,5 Mn 0,2 IN/DA007E DA1A DA1C DA2A DA2B DA3A DA3B DA004A DA004B DA DA5A DR001A DR002A DR001B DR002B µg/l Telefon:

12 SAMPLE Ni 0,5 m Ni 1,5 m Ni 0,5 m Ni 0,2 m Pb 0,5 Pb 1,5 Pb 0,5 Pb 0,2 Zn 0,5 Zn 1,5 IN/DA007E DA1A DA1C DA2A DA2B DA3A DA3B DA004A ND ND 377 DA004B ND DA DA5A DR001A DR002A DR001B DR002B µg/l Telefon:

13 Table 5. Metal concentrations EMD sediment probes AD1SP AD1SP AD1SP AD1SP AD1SP AD1SP AD1SP AD1SP AD1SP AD1SP AD1SP AD1SP AD1SP AD1SP AD1SP ng/(cm 2 *h) Fe Al As Ba Cd Co Cr Cu Mn Ni Pb Zn DA004SP DA004SP DA004SP DA004SP DA004SP DA004SP DA004SP DA004SP DA004SP DA004SP DA004SP DA004SP DA004SP DA004SP DA004SP ng/(cm 2 *h) Fe Al As Ba Cd Co Cr Cu Mn Ni Pb Zn Telefon:

14 DA3SP DA3SP DA3SP DA3SP DA3SP DA3SP DA3SP DA3SP DA3SP DA3SP DA3SP DA3SP DA3SP DA3SP DA3SP ng/(cm 2 *h) Fe Al As Ba Cd Co Cr Cu Mn Ni Pb Zn DA5SP DA5SP DA5SP DA5SP DA5SP DA5SP DA5SP DA5SP DA5SP DA5SP DA5SP DA5SP DA5SP DA5SP DA5SP ng/(cm 2 *h) Fe Al As Ba Cd Co Cr Cu Mn Ni Pb Zn Telefon:

15 DA5SP X Y Fe DA5SP X Y Al Telefon:

DA5SP X 7224383 Y 1625331-0.25 1.75 3.75 5.75 7.75 9.75 1 11.75 1 As 0.00 0.06 0.12 0.

16 DA5SP X Y As DA5SP X Y Ba Telefon:

DA5SP X 7224383 Y 1625331-0.25 1.75 3.75 5.75 7.75 9.75 1 11.75 1 Cd 0.00 0.05 0.10 0.15-0.25 1.75 3.75 5.75 7.75 9.75 1 11.75 1 DA5SP X 7224383 Y 1625331 Co 0.

17 DA5SP X Y Cd DA5SP X Y Co Telefon:

18 DA5SP X Y Cr DA5SP X Y Cu Telefon:

19 DA5SP X Y Mn Ni DA5SP X Y ng/cm 2 h Telefon:

20 DA5SP X Y Pb ng/cm 2 h DA5SP X Y Zn Telefon:

AD1SP X 7223078 Y 1624612 Fe 0 5 10 15 20

1624612 Al 0 20 40 60 80 100-0.25 1.75 3.

21 AD1SP X Y Fe Exposmeter AD1SP X Y Al Telefon:

22 AD1SP X Y As AD1SP X Y Ba Telefon:

23 AD1SP X Y Cd AD1SP X Y Co Telefon:

AD1SP X 7223078 Y 1624612 Cr 0.00 0.10 0.20 0.

24 AD1SP X Y Cr AD1SP X Y DGT sediment probe Cu Telefon:

25 AD1SP X Y DGT sediment probe Mn AD1SP X Y DGT sediment probe Ni Telefon:

26 AD1SP X Y Pb Exposmeter AD1SP X Y DGT sediment probe Zn Telefon:

27 DA004SP X Y Fe DA004SP X Y Al Telefon:

28 DA004SP X Y DGT sediment probe As DA004SP X Y Ba Telefon:

29 DA004SP X Y Cd DA004SP X Y Co Telefon:

30 DA004SP X Y Cr DA004SP X Y Cu Telefon:

31 DA004SP X Y Mn DA004SP X Y Ni Telefon:

32 DA004SP X Y Pb DA004SP X Y Zn Telefon:

33 DA3SP X Y Fe DA3SP X Y Al Telefon:

34 DA3SP X Y As DA3SP X Y Ba Telefon:

35 DA3SP X Y Cd DA3SP X Y Co Telefon:

36 DA3SP X Y Cr DA3SP X Y Cu Telefon:

37 DA3SP X Y Mn DA3SP X Y Ni Telefon:

38 DA3SP X Y Pb DA3SP X Y Zn Telefon:

39 Summer sampling Table 6. Metal concentrations in the lake EMD samples Fe 0,5 m Fe 1 m Fe 0,5 m Al 0,5 m Al 1 Al 0,5 m Ba 0,5 m SM µg/l Ba 1 m Ba 0,5 m SM SM SM SM SM SM Cd 0,5 Cd 1 m Cd 0,5 m Co 0,5 m Co 1 Co 0,5 m Cr 0,5 m SM <0.01 µg/l Cr 1 Cr 0,5 m SM <0.01 <0.01 <0.01 SM <0.01 <0.01 SM <0.01 <0.01 SM SM <0.01 <0.01 <0.01 SM Cu 0,5 Cu 1 m Cu 0,5 m Mn 0,5 m Mn 1 Mn 0,5 m Ni 0,5 SM µg/l Ni 1 Ni 0,5 SM SM SM SM SM SM Pb 0,5 m Pb 1 m Pb 0,5 m Zn 0,5 m µg/l SM Zn 1 Zn 0,5 m SM SM SM SM SM SM Telefon:

40 Table 7. Metal concentrations in the groundwater EMD samples Fe Al As Ba Cd Co Cr Cu Mn Ni Pb Zn µg/l GW < < < GW NM GW NM 0.02 < GW NM < GW < GW < GW NM < GW NM Quality control of sampling and analysis methods Table 8. STD values Fe Al As Ba Cd Co Cr Cu Mn Ni Pb Zn STD inlet, triplicate deap area, triplicate summer - winter inlet, dublicate NA ND Telefon:

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