Determination of parts per trillion levels of benzoylurea pesticides in groundwater by high-performance liquid chromatography-electrospray ionization mass spectrometry

被引:19
作者
Frenich, AG [1 ]
García, MDG [1 ]
Arrebola, FJ [1 ]
Vidal, JLM [1 ]
Galera, MM [1 ]
López, T [1 ]
机构
[1] Univ Almeria, Dept Analyt Chem, Almeria 04071, Spain
关键词
column liquid chromatography-mass spectrometry; trace analysis; benzoylurea pesticides; groundwater samples;
D O I
10.1007/BF02789752
中图分类号
Q5 [生物化学];
学科分类号
071010 ; 081704 ;
摘要
A high-performance liquid ch romatography-electrospray ionization mass spectrometry (HPLC-ES-MS) method has been developed for the determination of five benzoylurea pesticides, diflubenzuron, flufenoxuron, hexaflumuron, lufenuron, and triflumuron, in groundwater samples. Initially two atmospheric-pressure ionization techniques, electrospray (ES) and atmospheric pressure chemical ionization (APCI), both in positive- and negative-ion modes, were compared. Performance data for the method, e. g. recovery, sensitivity, precision, and linearity, show the reliability of the method for analysis of water samples. The lowest delectable concentrations of the pesticides were between 0.3 and 6.0 ng L-1 and recoveries were from 95 to 104% for water samples spiked at 10 ng L-1 ; relative standard deviations were in the range 5 - 15%. The HPLC-ES-MS method was applied to the determination of the live compounds in groundwater samples.
引用
收藏
页码:569 / 574
页数:6
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