Levels of Organotin Compounds in Burbot (Lota Lota) from Norwegian Lakes

Følsvik, N.; Brevik, E.

doi:10.1002/(sici)1521-4168(19990301)22:3<177::aid-jhrc177>3.0.co;2-b

Cited by 7 publications

(4 citation statements)

References 11 publications

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“…The status of burbot in Denmark and Norway is unknown, but in both the countries, burbot inhabits rivers and lakes (Jensen 1988; Hesthagen et al. 1998; Følsvik and Brevik 1999; Tammi et al. 2003; Carl et al.…”

Section: Circumpolar Status and Trends Of Burbotmentioning

confidence: 99%

“…There is some evidence that the species is threatened by pollution in parts of its range. Organotin compound levels in burbot muscle tissue showed an obvious trend, being higher in freshwaters situated in urban and rural areas in southern Norway than those in lakes in more isolated and remote areas in central and northern Norway (Følsvik and Brevik 1999). Similarly, elevated levels of polybrominated diphenyl ethers (PBDEs) were found in burbot from lakes Røgden and Mjøsa (Mariussen et al.…”

Section: Circumpolar Status and Trends Of Burbotmentioning

confidence: 99%

“…In the Curonian lagoon, warmer winters have had negative effects on burbot reproduction (Švagždys 2002). The status of burbot in Denmark and Norway is unknown, but in both the countries, burbot inhabits rivers and lakes (Jensen 1988;Hesthagen et al 1998;Følsvik and Brevik 1999;Tammi et al 2003;Carl et al 2007). There is some evidence that the species is threatened by pollution in parts of its range.…”

Section: Northern Europe Scandinavia and Baltic Countriesmentioning

confidence: 99%

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Worldwide status of burbot and conservation measures

et al. 2010

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Although burbot (Lota lota Gadidae) are widespread and abundant throughout much of their natural range, there are many populations that have been extirpated, endangered or are in serious decline. Due in part to the species’ lack of popularity as a game and commercial fish, few regions consider burbot in management plans. We review the worldwide population status of burbot and synthesize reasons why some burbot populations are endangered or declining, some burbot populations have recovered and some burbot populations do not recover despite management measures. Burbot have been extirpated in much of Western Europe and the United Kingdom and are threatened or endangered in much of North America and Eurasia. Pollution and habitat change, particularly the effects of dams, appear to be the main causes for declines in riverine burbot populations. Pollution and the adverse effects of invasive species appear to be the main reasons for declines in lacustrine populations. Warmer water temperatures, due either to discharge from dams or climate change, have been noted in declining burbot populations at the southern extent of their range. Currently, fishing pressure does not appear to be limiting burbot populations world‐wide. We suggest mitigation measures for burbot population recovery, particularly those impacted by dams and invasive species.

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Section: Circumpolar Status and Trends Of Burbotmentioning

confidence: 99%

Section: Circumpolar Status and Trends Of Burbotmentioning

confidence: 99%

Section: Northern Europe Scandinavia and Baltic Countriesmentioning

confidence: 99%

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Worldwide status of burbot and conservation measures

et al. 2010

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“…Therefore, it is very important to have a method that allows fast detection in the subnanogram per liter range. In earlier studies, OTs were often extracted using tropolone and n -hexane and determined with GC-flame photometric detection (FPD) after a Grignard derivatization. − In more recent work, the Grignard derivatization is replaced by in situ ethylation with sodium tetraethylborate − and FPD is sometimes replaced by atomic emission detection (AED). , Quite recently, solid-phase microextraction (SPME) was introduced as an elegant and practicable extraction technique for volatile OTs 13 and semivolatile OTs, in both cases combined with capillary gas chromatography−inductively coupled plasma mass spectrometry (CGC−ICPMS).…”

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confidence: 99%

Stir Bar Sorptive Extraction for the Determination of ppq-Level Traces of Organotin Compounds in Environmental Samples with Thermal Desorption-Capillary Gas Chromatography−ICP Mass Spectrometry

et al. 2001

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The extraction and preconcentration capabilities of a new extraction technique, stir bar sorptive extraction, were combined with the separation power of capillary gas chromatography (CGC) and the low limits of detection (LODs) of inductively coupled plasma mass spectrometry (ICPMS) for the determination of the organotin compounds tributyltin (TBuT) and triphenyltin (TPhT) in aqueous standard solutions, harbor water, and mussels (after digestion with tetramethylammonium hydroxide). Throughout, tripropyltin for TBuT and tricyclohexyltin for TPhT were used as internal standards to correct for variations in the derivatization and extraction efficiency. Calibration was accomplished by means of single standard addition. Derivatization to transform the trisubstituted compounds into sufficiently volatile compounds was carried out with sodium tetraethylborate. The compounds were extracted from their aqueous matrix using a stir bar of 1-cm length, coated with 55 microL of poly(dimethylsiloxane) (PDMS). After 15 min of extraction, the stir bar was desorbed in a thermal desorption unit at 290 degrees C for 15 min, during which the compounds were cold-trapped on a precolumn at -40 degrees C. Flash heating was used to rapidly transfer the compounds to the GC where they were separated on a capillary column with a PDMS coating. After separation, the compounds were transported to the ICP by means of a homemade heated (270 degrees C) transfer line. Monitoring of the 120Sn+ signal by ICPMS during the run of the GC provided extremely low LODs for TPhT in water: 0.1 pg L(-1) (procedure) and 10 fg L(-1) (instrumental) and a repeatability of 12% RSD (n = 10). In harbor water, concentrations of 200 pg L(-1) for TBuT and 22 pg L(-1) for TPhT were found. In fresh mussels, a concentration of 7.2 ng g(-1) (dry weight) TPhT was found. The accuracy of the method was checked by the determination of TPhT in CRM477 (mussel tissue) and comparison of the result to that of an analysis of the same material with a classical liquid/liquid extraction with isooctane.

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