The determination of the rodenticide tetramethylenedisulfotetramine (TETS) in drinking water is reportable through the use of automated sample preparation via solid phase extraction and detection using isotope dilution gas chromatography-mass spectrometry. The method was characterized over twenty-two analytical batches with quality control samples. Accuracies for low and high concentration quality control pools were 100 and 101%, respectively. The minimum reporting level (MRL) for TETS in this method is 0.50 ??g La?’1. Five drinking waters representing a range of water quality parameters and disinfection practices were fortified with TETS at ten times the MRL and analyzed over a 28 day period to determine the stability of TETS in these waters. The amount of TETS measured in these samples averaged 100 ?± 6% of the amount fortified suggesting that tap water samples may be held for up to 28 days prior to analysis.
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机译：据报道，饮用水中杀鼠剂四亚甲基二磺基四胺（TETS）的测定可通过固相萃取和同位素稀释气相色谱-质谱法进行自动样品制备来进行。该方法在22个分析批次中进行了质量控制样品的表征。低浓度和高浓度质量控制池的准确度分别为100％和101％。此方法中TETS的最小报告级别（MRL）为0.50 ?? g La？’1。用代表最大残留限量十倍的TETS强化了代表一系列水质参数和消毒实践的五种饮用水，并在28天的时间内进行了分析以确定TETS在这些水中的稳定性。这些样品中测得的TETS量平均为强化量的100±±6％，这表明自来水样品在分析前最多可保存28天。
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