The Health Risk Assessment and Characters of Vegetable Pb in Jiutai Suburb

Abstract

119vegetable samples were collected from Jiutai County vegetable production base, and Pb concentrations were measured using graphite furnace atomic absorption spectrophotometer (GF-AAS). Results showed that the average Pb of vegetable was 0.05 mg·kg-1fresh weight, with only 1.5% above the Safety Requirements. Single-factor contaminant index was utilized for assessment. It was found that vegetable Pb order as following: leaf vegetables>fruit vegetables, dark vegetables>light vegetables. The average daily intake (DI) Pb of per standard person was urban 18.6 ug•d-1and rural 16.7 ug•d-1, as well as economical family 19.1 ug•d-1and poor16.3 ug•d-1, indicating that vegetable Pb in Jiutai County were safety. The Pb health risk was assessed based on the target hazard quotients (THQ). The study showed that THQurban=THQhigh>THQmedium>THQlow=THQrural, indicating the health risk via vegetable consumption in rural was relative lower than that in unban area. Assessment results proved that the vegetables Pb in this area is no health risk to persons.