平顶山市碘营养状况调查分析

Analysis of nutritional status of iodine among residents in Pingdingshan

目的了解平顶山市人群碘营养状况,为制订防治措施提供科学依据。方法 2011年,在平顶山市8个县（区）中,每个县（区）抽取9个乡（镇）,每个乡（镇）中采集36份居民家中食用盐,采用碘酸钾直接滴定法检测盐碘;每个县（区）按照东、西、南、北、中5个方位各抽取1个乡（镇）,每个乡（镇）抽取20名8~10岁儿童,采集尿样,用砷铈催化分光光度法测定尿碘。结果平顶山市共抽取居民户食盐2 193份,碘盐中位数为30.3 mg/kg,碘盐覆盖率为91.07%,合格碘盐食用率为84.82%。共调查8~10岁儿童780份尿样,尿碘中位数为146.61μg/L;〈50μg/L者占16.46%（128/780）,50~99μg/L者占21.28%（166/780）,100~199μg/L者占26.92%（210/780）,200~299μg/L者占17.44%（136/780）,300μg/L以上者占17.95%（140/780）;各年龄组之间尿碘比较,差异无统计学意义（χ2=5.44,P〉0.05）。以县（区）计算,尿碘中位数〈99μg/L有2个县（区）,占25%;100~199μg/L有4个县（区）,占50%;200~299μg/L有2个县（区）,占25%;不同县（区）之间尿碘比较,差异有统计学意义（χ2=128.77,P〈0.01）。结论目前平顶山市人群碘营养水平基本适宜,应继续加强碘营养水平监测。

Objective To investigate the nutritional status of iodine among residents in Pingdingshan,and to facilitate scientific prevention and control of iodine deficiency disorders（IDD）.Methods 9 towns were selected in each of 8 counties（districts） in Pingdingshan,and 36 edible salt samples were collected in each of the selected town to detect salt iodine by direct titrimetry.1 town was selected respectively on the site of the east,west,south,north and middle of every counties（districts）,and 20 children aged 8 to 10 were selected in each of the selected town to collect urine samples and detect urinary iodine by As-Ce catalytic spectrophotometric assay.Results The median iodine of 2 193 salt specimens by household was 30.3 mg / kg,the coverage rate of qualified iodized salt was 91.07%.The consumption rate of qualified iodized salt was 84.82%.The median of urinary iodine for 780 children aged 8 to 10 was 146.61 μg / L,of which ＆lt; 50 μg / L accounted for 16.46%（128 /780）;50 ~ 99 μg / L accounted for 21.28%（166 /780）;100 ~ 199 μg / L accounted for 26.92%（210 /780）;200 ~ 299 μg / L accounted for 17.44%（136 /780）;300 μg / L or more,accounted for 17.95%（140 /780）.However,no significant difference was observed between different age groups（χ2= 5.44,P ＆gt; 0.05）.At county（district） level,the median of urinary iodine in 2（25%） counties（districts） was ＆lt; 99 μg/L,that in other 4（50%） counties（districts） was 100 ~ 199 μg/L,and in other 2（25%） counties（districts） was 200 ~ 299 μg/L,and statistical significance was observed between different counties（districts）（χ2= 128.77,P ＆lt; 0.01）.Conclusions Current iodine nutrition among residens in Pingdingshan is appropriate basically.We should continue to strengthen the program of iodine supplement.