T/SQIA 001-2022 Fast detection of paraquat in fruits and vegetables using colloidal gold immunochromatography method

Scope

Main technical content: This document specifies a rapid detection method for paraquat residues in vegetables and fruits using colloidal gold immunoassay. This document is applicable to the rapid detection of paraquat residues in vegetables and fruits. Note 1: Vegetables include chives, cabbage sprouts, celery, spinach, eggplant, tomatoes, cucumbers, bitter melon, cowpea, carrots, potatoes, lotus root, bean sprouts, and corn shoots. Note 2: Fruits include pears, peaches, grapes, longan, grapefruit, bananas, watermelons, apples, olives, citrus, and oranges. This method uses the principle of competitive inhibition immunoassay. After extraction, the paraquat in the sample binds to the specific antibody labeled with colloidal gold, inhibiting the binding of the antibody and the antigen on the detection line (T line) of the test strip, resulting in a change in the color of the detection line (T line). By comparing the color of the detection line (T line) with that of the control line (C line), the paraquat in the sample can be qualitatively analyzed.

Development Information

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