金湖地区儿童及成人膳食铅摄入量检测
Dietary intakes of lead in children and adults of Jinhu area measured with duplicate portion study
-
摘要: 目的 了解江苏省金湖地区儿童、成人膳食铅的摄入量,并评价其安全性。方法 收集62名研究对象连续3 d的双份饭(duplicate portion)样本,使用石墨炉原子吸收光谱法测定铅含量。采用联合国粮农组织和世界卫生组织食品添加剂联合专家委员会推荐的暂定每周耐受摄入量(PTWI)评价江苏省金湖地区儿童、成人膳食铅摄入量的安全性。结果 共收集符合标准的双份饭样本178份,儿童、成人各89份,铅的检出率均为94.4%,江苏省金湖地区儿童及成人每天膳食铅摄入量的范围分别为0.1~7.4,0.1~7.6μg/(kg·bw);P97.5分别为6.9,5.3μg/(kg·bw);平均膳食铅摄入量分别为(2.2±1.7),(1.5±1.3)μg/(kg·bw);每周膳食铅摄入量的P97.5分别为24.3,23.6μg/(kg·bw),各占PTWI的97.2%,94.4%。儿童每周膳食铅摄入量高于成人,差异有统计学意义(P<0.01)。结论 江苏省金湖地区儿童、成人膳食铅污染状况较为严重,需采取有效措施降低铅的膳食摄入量以减轻铅暴露引起的不良健康反应。Abstract: Objective To understand the dietary lead intakes of children and adults in Jinhu area in Jiangsu province and assess its safety.Methods The duplicate food portions of 62 subjects were collected over 3 consecutive days.Lead levels in duplicate samples were dete rmined by graphite furnace atomic absorption spectrometry.The safety of dietary lead intakes of children and adults was evaluated by using the dietary lead PTWI recommended by JECFA of FAO/WHO.Results A total of 178 duplicate food portions was collected(89 from adults,89 from children).The detection rate for lead was 94.4%.The daily lead intakes of children and adults were 0.1-7.4,0.1-7.6μg/kg·bw with means of 6.9,5.3 μg/kg·bw,respectively.The percentile 97.5 weekly dietary lead(of PTWI)intakes of children and adults were 24.3 (97.2%),23.6μg/kg·bw(94.4%),respectively.The weekly dietary lead intakes of children calculated on a body weight basis were higher than that of adults(Z=2.9847,P<0101).Conclusion It is concluded that the lead pollution in dietary of children and adults in Jinhu area is serious,and dietary lead in take need to be reduced by taking effcient measures in order to minimize the adverse health effects related.
下载: