title: [Space-time analysis of over-limit of sodium nitrite in cooked meat products from Hunan Province in 2010-2014].
abstract: To determine over-limit status of sodium nitrite in cooked meat products in Hunan Province, and to provide scientific evidence for making health supervision.  Methods: In accordance with the national standards for sampling and testing, data were analyzed by classical and spatial statistic methods.  Results: The total over-limit rate of sodium nitrite was 5.5% in 731 samples. The relative higher sodium nitrite over-limit rates were Xiangxi Tujia and Miao autonomous prefecture and Zhangjiajie. October and February were the main months in nitrite over-limit. Five regions with over-limit of sodium nitrite in cooked meat products were detected in Hunan.  Conclusion: With obvious space-time clustering, over-limit of sodium nitrite in cooked meat products is a common problem particularly in northwest Hunan and Zhuzhou City. Supervision in October should be further strengthened in above-mentioned areas to guarantee the consumers health.
authors.affiliation: Price Control Office, Xiangya Hospital, Central South University, Changsha 410008, China 861835839@qq.com.
authors.forename: Huiying
authors.initials: H
authors.lastname: Liao
authors.affiliation: Xiangya School of Public Health, Central South University, Changsha 410078, China.
authors.forename: Hengwen
authors.initials: H
authors.lastname: Zhao
authors.affiliation: National Health Inspection, Health and Family Planning Commission of Zhuzhou, Zhuzhou Hunan 412007, China.
authors.forename: Bo
authors.initials: B
authors.lastname: Yu
mesh_terms: D000818:Animals; D002681:China; D003296:Cooking; D006358:Hot Temperature; D008460:Meat / Q000032:analysis*; D008461:Meat Products / Q000032:analysis*; D012977:Sodium Nitrite / Q000032:analysis*; D013029:Space-Time Clustering
chemical_list: D012977:Sodium Nitrite