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二烷基铅和三烷基铅是四烷基铅的降解产物,在水中毒性甚大。这类离子型烷基铅化合物存在于生物组织中,分析时相当困难。本文介绍了一种组织稳定剂,用来溶解生物样品,而不改变烷基铅的化学形态。用二乙基二硫代氨基甲酸钠(Na-DDTC)为络合剂,通过络合剂提取来定量分离各种烷基铅和铅(H),然后丁基化成相应的四烷基铅形式,RnPbBu~(4-n)和Bu_4Pb(R为甲基、乙基),再用气相色谱法和原子吸收光谱法进行测定,本方法同时测定一个样品中的下列物质:四烷基铅(Me4Pb、Me_3EtPb、Me_2Et_2Pb、MeEt_3Pb、Et_4Pb);离子型烷基铅
Dialkyl lead and trialkyl lead are four alkyl lead degradation products, very toxic in water. Such ionic alkyl lead compounds exist in biological tissues and are quite difficult to analyze. This article describes a tissue stabilizer used to dissolve biological samples without changing the chemical form of alkyl lead. Various alkyl lead and lead (H) were quantitatively separated by complexing agent extraction using sodium diethyldithiocarbamate (Na-DDTC) as a complexing agent and then butylated to the corresponding tetraalkyl lead form, RnPbBu ~ (4-n) and Bu_4Pb (R is methyl, ethyl), and then determined by gas chromatography and atomic absorption spectrometry, the method of simultaneous determination of the following substances in a sample: tetraalkyl lead (Me4Pb, Me_3EtPb, Me_2Et_2Pb, MeEt_3Pb, Et_4Pb); ionic alkyl lead