OBJECTIVE: Studies on the association of child blood lead and the chemical form of the room dust lead as well as to explore its removability and the biological validity. METHODS: Using minute step extraction process to analyze and test the seven chemical forms of lead in the dust of a room. Blood lead count and humus union condition, carbonate union condition exposition quantity, amount of radiation, output quantity from environmental to blood lead etc. were calculated. RESULTS: The child blood lead was related to the various chemical form but carbonate condition (r = 0.531, P < 0.01) and humus (r = 0.361, P < 0.05) showing statistical significance and also related to the exposure of carbonate condition (carbonate: r = 0.837, P < 0.01). The output quantity (carbonate pH = 3.5: r = 0.837, P < 0.01) of simulate gastric juice was related to the exposure to humus (r = 0.746, P < 0.05), intake (r = 0.746, P < 0.05) and the output quantity of carbonate condition simulate gastric juice (pH = 1.5: r = 0.745, P < 0.05). CONCLUSION: In South China, areas with high carbonate content lead and the union conditions of carbonate and humus were possibly the main reasons causing excessive amount of child blood lead level.
OBJECTIVE: Studies on the association of child blood lead and the chemical form of the room dust lead as well as to explore its removability and the biological validity. METHODS: Using minute step extraction process to analyze and test the seven chemical forms of lead in the dust of a room. Blood lead count and humus union condition, carbonate union condition exposition quantity, amount of radiation, output quantity from environmental to blood lead etc. were calculated. RESULTS: The child blood lead was related to the various chemical form but carbonate condition (r = 0.531, P < 0.01) and humus (r = 0.361, P < 0.05) showing statistical significance and also related to the exposure of carbonate condition (carbonate: r = 0.837, P < 0.01). The output quantity (carbonate pH = 3.5: r = 0.837, P < 0.01) of simulate gastric juice was related to the exposure to humus (r = 0.746, P < 0.05), intake (r = 0.746, P < 0.05) and the output quantity of carbonate condition simulate gastric juice (pH = 1.5: r = 0.745, P < 0.05). CONCLUSION: In South China, areas with high carbonate content lead and the union conditions of carbonate and humus were possibly the main reasons causing excessive amount of child blood lead level.
Authors: Sihao Lin; Xiaorong Wang; Ignatius Tak Sun Yu; Wenjuan Tang; Jianying Miao; Jin Li; Siying Wu; Xing Lin Journal: Am J Public Health Date: 2011-03-18 Impact factor: 9.308