Trimethyllead in rainwater

Compound Techn. of final CV iVo) between Nr of sets of CV (%) between 

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Zuliaurre, R., Pons, B. and Nerin, C. (1997) Speciation of trimethyllead in rainwater by gas chromatography mass spectrometry after ethylation with sodium tetraethylborate-comparison with other alkylation methods./. Chromatogr. A, 779, 299-306. 

Quevauviller Ph, Harrison R, Adams E, and Ebdon L (2000) An overview of methods for the determination of trimethyllead in rainwater and urban dust reference... 

Quevauviller, Ph., Ebdon, L., Harrison, R. and Wang, Y. (1998b) Certifying the contents of trimethyllead in an artificial rainwater material. The Analyst, 123, 971. 

Application of AAS, MS, and ICP-MS Detection in an Intercalibration Study for Trimethyllead in Artificial Rainwater ... 

Specific chapters then focus on different projects on speciation analysis. Chapter 4 deals with interlaboratory studies on methylmercury in fish and sediment Chapter 5 describes the collaborative projects to certify organotins in sediment RMs and mussel tissues Chapter 6 gives an overview of the certification project on trimethyllead in simulated rainwater and urban dust Chapter 7 describes the certification project on arsenic species in fish tissues Chapter 8 focuses on the intercomparison and tentative certification of Se(IV) and Se(VI) in simulated freshwater Chapter 9 deals with a feasibility study to stabilize Cr species in solution followed by the certification of Cr(III) and Cr(VI) in lyophilized solutions and welding dust Chapter 10 gives a review of methods used for A1 speciation Chapter 11 develops the overall collaborative project to standardize single and sequential extraction procedures for soil and sediment analysis, followed by interlaboratory studies and certification of soil and sediment reference materials. 

The project to improve the quality control of lead speciation analysis was started in 1990 by a feasibility study on the stability of alkyllead species in solution [118], and was concluded in 1991. The first interlaboratory study was conducted in 1992 [119] and was followed by a second exercise carried out in 1993 [120]. The certification campaign of trimethyllead in artificial rainwater and urban dust was conducted in 1995-96. 

Techniques used in the interlaboratory studies and in the certification campaigns on trimethyllead in artificial rainwater and urban dust are described below. 

Following a feasibility study, it was found that trimethyllead (TML) would be of sufficient stability for the purpose of interlaboratory studies and possibly certifications of RMs whereas dialkyllead species and triethyllead were not stable enough. Interlaboratory studies were performed in 1992-1994 on TML in artificial rainwater and urban dust and enabled a significant improvement of the state-of-the-art to be achieved (Quevauviller et al., 1995b). These exercises were followed by a certification campaign aiming to certify TML in candidate RMs of artificial rainwater and urban dust. The between-laboratory agreement obtained was very satisfactory and both materials were proposed for certification. 

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