Zhiyan Yang

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Two competitive immunoassays, a laboratory assay based on microwell plates and a field test based on the use of polystyrene tubes, have been developed for the detection of endosulfan in agricultural products. The limit of detection for the microwell plate format was 0.8 +/- 0.1 microg/kg, and the limit of detection for the tube format was 1.6 +/- 0.2(More)
A sample pretreatment device based on multi-step distillation principle was constructed and evaluated. Trace components in the sample were extracted, separated and enriched at the cold receptor of the molecular diffusion distillation device. The cold receptor was designed as an exchangeable part to avoid the cross interferences from one sample to another(More)
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