Pinto Carina Aparecida, Filomeno Fontes Edimar Aparecida, Crispim Sandra Patricia, Vieira Ribeiro Sarah Aparecida, Franceschini Sylvia do Carmo Castro, Pizato Nathalia, Rocha de Faria Franciane, Pereira Renata Junqueira, Abreu de Carvalho Carolina, Carmo Rodrigues Barbosa Míriam, Sperandio Naiara, de Souza Macedo Mariana, Priore Silvia Eloiza
Department of Nutrition and Health, Universidade Federal de Viçosa (UFV), Viçosa 36570900, Brazil.
Department of Food Technology, Universidade Federal de Viçosa (UFV), Viçosa 36570900, Brazil.
J Nutr Metab. 2022 Dec 21;2022:7542632. doi: 10.1155/2022/7542632. eCollection 2022.
The objective is to analyze the concentration of iodine in Brazilian drinking water and its possible contribution to iodine intake for different groups.
Water samples collected from primary healthcare units in eight locations distributed across all five macroregions of Brazil were analyzed. The quantification of iodine in the water samples was done by spectrophotometry (leuco crystal violet method). To classify the degree of iodine concentration, the recommendation of the Ministry of Health (China) was followed since Brazil lacks a classification standard. To verify the possible contribution of drinking water to iodine intake for different groups, the recommended water intake for each group according to the United States Institute of Medicine (2004) was considered. The percentage of iodine in drinking water and its contribution to iodine intake for different physiological groups were calculated based on the estimated average requirement (EAR) of iodine. A descriptive statistical analysis was performed using SPSS version 21.0 and Statistical Analysis Systems (SAS) version 9.2.
Significant differences were found between the maximum and minimum concentrations of iodine in water samples from the same location. In Pinhais (south region), the difference was 44.32 g· L; in Viçosa (southeast region), it was 27.86 g·L; in Rondonópolis (midwest region), it was 12.66 g·L; in São Luís (northeast region), it was 11.82 g·L; in Brasilian Federal District (midwest region), it was 10.98 g·L; in Macaé (southeast region), it was 10.14 g· L; in Palmas (north region), it was 4.22 g·L; and in Vitória (southeast region), it was 1.69 g·L. The maximum concentrations of iodine found in the drinking water of Pinhais and Viçosa can contribute more than 70.0% and 50.0%, respectively, to daily iodine intake for all groups.
Monitoring the concentration of iodine in drinking water from different locations in each city or Federal District is a preventive measure against inadequate iodine intake and possible adverse changes in population health.
分析巴西饮用水中的碘浓度及其对不同群体碘摄入量的可能贡献。
对从巴西所有五个大区分布的八个地点的基层医疗单位采集的水样进行分析。水样中碘的定量采用分光光度法（无色结晶紫法）。由于巴西缺乏分类标准，因此遵循中国卫生部的建议对碘浓度程度进行分类。为了验证饮用水对不同群体碘摄入量的可能贡献，考虑了美国医学研究所（2004年）为每个群体推荐的饮水量。根据碘的估计平均需求量（EAR）计算饮用水中碘的百分比及其对不同生理群体碘摄入量的贡献。使用SPSS 21.0版和统计分析系统（SAS）9.2版进行描述性统计分析。
在同一地点采集的水样中，碘的最高浓度和最低浓度之间存在显著差异。在皮涅伊斯（南部地区），差异为44.32μg·L；在维索萨（东南部地区），为27.86μg·L；在朗多诺波利斯（中西部地区），为12.66μg·L；在圣路易斯（东北部地区），为11.82μg·L；在巴西联邦区（中西部地区），为10.98μg·L；在马卡埃（东南部地区），为10.14μg·L；在帕尔马斯（北部地区），为4.22μg·L；在维多利亚（东南部地区），为1.69μg·L。皮涅伊斯和维索萨饮用水中发现的碘最高浓度分别可为所有群体的每日碘摄入量贡献超过70.0%和50.0%。
监测每个城市或联邦区不同地点饮用水中的碘浓度是预防碘摄入不足和人群健康可能出现的不良变化的一项措施。
