The Risk Evaluation of Contaminants in Animal Products in Tianjin China

This study investigated the heavy metals and veterinary drugs in people daily intake animal products in Tianjin China. Inductively Coupled Plasma Mass Spectrometry (ICP- MS) was employed to detect the heavy metals including Chromium (Cr), Arsenic (As), Cadmium (Cd), Mercury (Hg) and Plumbum (Pb). Enzyme Linked Immunosorbent Assay (ELISA) was employed to detect five veterinary drugs including Benzyl Penicillin (BP), Erythromycin (EM), Tetracyclines (TCs), Sulfonamides (SAs) and Quinolones (QNs). The detection results showed that most of samples were qualified, but there were a little bit of samples over the limits. The over-limit rate of Hg, Pb, TCs and SAs was 3.57%, 4.76%, 2.36% and 4.76% respectively. The pollution index was used to evaluate the quality of animal products. The single factor pollution index results showed most of samples were first class products. The point assessment model was used to conduct the dietary exposure assessment of heavy metals and veterinary drugs. Based on the exposure assessment results and the reference dose (RFD), the Target Hazard Quotient (THQ) was used to conduct the health risk evaluation. The results showed that the risk of heavy metals and veterinary drugs from animal products residents dietary ingested were acceptable at the average exposure level. Based on the THQ value and over-limit rate, the contaminant risk weight was calculated by Analytic Hierarchy Process (AHP). The risk weight could indicate the magnitude of contaminants risk. This study provides a reference of contaminants classification monitoring and risk management.