【摘要】 目的了解重庆市榨菜生产区与非榨菜生产区居民食用盐质量。方法采用多阶段分层整群随机抽样的方法,在榨菜生产区与非榨菜生产区分别监测2 460、9 093份居民食用盐。采用直接滴定法测定盐中碘含量,对比分析榨菜生产区与非榨菜生产区的碘含量、碘盐覆盖率、碘盐合格率、合格碘盐食用率、非碘盐率等指标。结果榨菜生产区、非榨菜生产区居民食用盐的碘含量中位数分别为28.99、27.60 mg/kg,碘盐覆盖率分别为99.07%、99.80%,碘盐合格率分别为95.98%、96.09%,合格碘盐食用率分别为95.08%、95.90%,发现非碘盐的村占调查村的比例分别为10.00%、2.67%。不同地区比较,食用盐的碘含量(H=70.16,P<0.01)、频数构成比分布(χ2=33.55,P<0.01)、碘盐覆盖率(χ2=29.74,P<0.01)、发现非碘盐的调查村比例(χ2=26.79,P<0.01)差异均有统计学意义,碘盐合格率(χ2=0.06,P>0.05)、合格碘盐食用率(χ2=3.15,P>0.05)差异均无统计学意义。结论重庆市非碘盐主要来自榨菜生产的区县,应加强对榨菜加工用盐的管理。更多还原

【Abstract】 Objective The objective of the study was to assess the quality of edible salts for residents in pickle production area and non-pickle production area in Chongqing City. Methods Multi-stage stratified cluster random sampling was used to monitor 2460and 9093 samplesofediblesaltforresidentsin pickleproduction areaand non-pickleproduction area, respectively. The contents of iodine in the salt samples were measured by direct titration. The content of iodine, coverage of iodized salt, compliance rate of iodized salt, consumption ofqualified iodized salt, percentage ofnon-iodized salt in the two areas were compared and analyzed. Results In the pickle production area and non-pickle production area, the median of iodine content in edible salts were 28.99 mg/kg and 27.60 mg/kg, the coverage of iodized salt were 99.07% and 99.80%, the compliance rate of iodized salt were 95.98% and96.09%, the consumption of qualified iodized salt were 95.08% and 95.90%, and the percentage of villages producing non-iodized salt over all surveyed villages were 10.00% and 2.67%, respectively. Significant differences in the iodine content of edible salt(H=70.16, P<0.01), distribution of frequency constituent ratio(χ2=33.55, P<0.01), coverage of iodized salt(χ2=29.74, P<0.01), and percentage ofnon-iodized salt-producing villages(χ2=26.79, P<0.01) were observed between different areas, while the difference in compliance rate of iodized salt(χ2=0.06, P>0.05) and consumption of qualified iodized salt(χ2=3.15, P>0.05) were not statistically significant. Conclusion Non-iodized salts in Chongqing were mainly produced in pickle production districts or counties, suggesting that the management of salt additives in pickle production should be strengthened.更多还原