Waseem Amir, Yaqoob Mohammad, Nabi Abdul
Department of Chemistry, University of Balochistan, Quetta, Pakistan.
Anal Sci. 2009 Mar;25(3):395-400. doi: 10.2116/analsci.25.395.
A simple and rapid flow-injection method is reported for the determination of dithiocarbamate fungicides (maneb, nabam and thiram) based on chemiluminescence detection. The method involves the photodegradation of dithiocarbamate fungicides via UV light in an alkaline medium. Photoproducts are then reacted with luminol in the absence of an oxidant. Linear calibration graphs were obtained in the range 0.01 - 4.0 mg L(-1) for maneb and nabam and 0.05 - 1.0 mg L(-1) for thiram with relative standard deviations (n = 4) in the range 1.0 - 2.6%. The detection limits (S/N = 3) of maneb, nabam and thiram were 10, 8.0 and 5.0 ng mL(-1), respectively, with a sample throughput of 100 h(-1). The method was successfully applied to determine these dithiocarbamate fungicides in spiked natural water samples.
报道了一种基于化学发光检测的简单快速流动注射法测定二硫代氨基甲酸盐类杀菌剂（代森锰锌、福美双和福美铁）。该方法包括在碱性介质中通过紫外光对二硫代氨基甲酸盐类杀菌剂进行光降解。然后光产物在无氧化剂的情况下与鲁米诺反应。代森锰锌和福美双在0.01 - 4.0 mg L(-1)范围内、福美铁在0.05 - 1.0 mg L(-1)范围内获得线性校准曲线，相对标准偏差（n = 4）在1.0 - 2.6%范围内。代森锰锌、福美双和福美铁的检测限（S/N = 3）分别为10、8.0和5.0 ng mL(-1)，样品通量为100 h(-1)。该方法成功应用于加标天然水样中这些二硫代氨基甲酸盐类杀菌剂的测定。
