Determination and Analysis of Heavy Metal Lead and 6 Pesticides in Tender Ginger and Old Ginger

In order to understand the heavy metal lead and 6 kinds of pesticide residues in tender ginger and old ginger at different growth stages, 40 batches of young ginger and 40 batches of old ginger were randomly collected from the market and supermarket. According to the current national standard method, 7 items were detected, including lead, imidacloprid, thiamethoxam, phorate, omethoate, cypermethrin and beta-cypermethrin, cyhalothrin and lambda-cyhalothrin. The results showed that there were 8 batches of old ginger unqualified in the 80 batches, with the total qualified rate being 90.0%, among which the qualified rate of tender ginger was 100.0%, the qualified rate of old ginger was 80.0%, the unqualified items were lead, imidacloprid, thiamethoxam. Combined with the analysis of detection data, it was found that only lead, imidacloprid and thiamethoxam were detected in the samples, showing that the detection frequency of pesticide in the old ginger with long growth period was higher than that in the tender ginger with short growth period, and the detection level of lead in the old ginger was higher than that in the tender ginger. Combined with the detection data, the results and causes of the detection and overspecification of the items such as lead, imidacloprid, thiamethoxam in tender ginger and old ginger were respectively analyzed, which could provide scientific basis for the safety risk control of edible agricultural ginger in the area.