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| Investigation of Perchlorate Contamination in Daily Consumption of Vegetables by Residents in Hohhot City |
| SUN Zhuoran，ZAHNG Haiyan，LIU Chunbo，BAO Yulan，ZHANG Limin，LI Min，LIU Zhili* |
| Hohhot Disease Control and Prevention Center，Hohhot 010070，Inner Mongolia，China |
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Abstract In order to master the basic situation of vegetable perchlorate contamination in Huhhot region，and analyze its health risk to human body，this study collected at random 92 vegetable samples in Hohhot City and measured perchlorate content using ultra high performance liquid chromatography tandem mass spectrometry（UHPLC-MS/MS），then caculated the hazard quotient to evaluate the health risk of perchlorate in vegetables．Results indicated that perchlorate was detected in 53 vegetable samples out of 92 tested samples．The detection rate was 57.6%．The concentration ranged from ND-1.076 mg · kg-1．Chinese cbbage type vegetables belonged to the vegetable category with the highest perchlorate concentration. The detection rate of perchlorate was 72.7%．In planting stage，vegetable perchlorate detection rate was 81.0%，and at circulation stage it was 38.0%．According to the European limit value of perchlorate for vegetable，the exceeding standard rate was 27.2%．The hazard quotient to human body by perchlorate intake via vegetable route in Hohhot region was less than 1，suggesting that at present perchlorate contamination level was acceptable and relatively safe for human body．
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Received: 04 January 2024
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