Lobinski R, Szpunar-Lobinska J, Adams F C, Teissedre P L, Cabanis J C
University of Antwerp (U.I.A.), Department of Chemistry, Wilrijk (Antwerpen), Belgium.
J AOAC Int. 1993 Nov-Dec;76(6):1262-7.
A method was developed for the speciation analysis of ionic organolead compounds in wine. The analytes were extracted as diethyldithiocarbamate complexes into hexane and propylated with a Grignard reagent. The derivatized extract was analyzed by capillary gas chromatography/microwave-induced-plasma atomic emission spectrometry. The method of standard additions was used for calibration to correct for variable recoveries and signal enhancements. Red, rosé, and white wines from southern France were analyzed. Trimethyllead was the ubiquitous species. The wines made from grapes grown close to industrial zones showed elevated concentrations of ethyllead species. The concentrations of methyllead and ethyllead found in wines were compared with the concentrations of organolead found in rain water and plant sap collected in the viticultural regions. The ratio of methyllead to ethyllead in wines greatly exceeded the same ratio found in atmospheric deposits.
开发了一种用于葡萄酒中离子型有机铅化合物形态分析的方法。分析物以二乙基二硫代氨基甲酸盐络合物的形式萃取到己烷中，并用格氏试剂进行丙基化。衍生化萃取物通过毛细管气相色谱/微波诱导等离子体原子发射光谱法进行分析。采用标准加入法进行校准，以校正回收率和信号增强的变化。对法国南部的红葡萄酒、桃红葡萄酒和白葡萄酒进行了分析。三甲基铅是普遍存在的形态。在工业区附近种植的葡萄酿造的葡萄酒中，乙基铅形态的浓度较高。将葡萄酒中甲基铅和乙基铅的浓度与葡萄种植区收集的雨水和植物汁液中有机铅的浓度进行了比较。葡萄酒中甲基铅与乙基铅的比例大大超过了大气沉积物中的相同比例。
