کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1169035 960617 2008 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Flow injection-photoinduced-chemiluminescence determination of ziram and zineb
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
Flow injection-photoinduced-chemiluminescence determination of ziram and zineb
چکیده انگلیسی

A simple, sensitive and rapid method for the determination of the pesticides ziram and zineb was described. This new method was based on the coupling of FIA methodology and direct chemiluminescent detection; this approach had not been used up to now with these pesticides. The additional use of an ‘on line’ photochemical reaction, which was performed by using a photoreactor consisting of a long piece of PTFE helically coiled around a 15 W low-pressure lamp, increased by a factor >20 the chemiluminometric response of the pesticides. An additional 3-fold improvement in the analytical signal was also achieved by using quinine as sensitizer. The obtained throughputs were very high (121 and 101 h−1 for ziram and zineb, respectively); this feature together with its low limit of detection (1 ng mL−1) makes this method particularly well suited to routine analyses of environmental samples. On the other hand, its applicability to two members of the dithiocarbamate family of pesticides, makes it promising for the determination of the rest of the members of this family. The method was demonstrated by application to spiked water samples from different origins (ground, river and irrigation).

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Analytica Chimica Acta - Volume 625, Issue 2, 12 September 2008, Pages 173–179
نویسندگان
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