期刊名称：Journal of Applied Sciences in Environmental Sanitation
印刷版ISSN：0126-2807
电子版ISSN：1978-6980
出版年度：2010
卷号：5
期号：3
页码：227-238
出版社：Sepuluh Nopember Institute of Technology (ITS)
摘要：Mild Steel Manual Metal Arc Welding (MMAW) is a common method to join metals permanently, which produces manganese fume. Manganese is an essential element with hazardous effect to central nervous system. The aim of this study was to assess airborne manganese (MnA) levels, blood manganese (MnB) levels and urinary manganese (MnU) levels in 19 MMAW welders and 19 unexposed controls, which were equivalent in smoking habit and caffeine and alcohol consumption. MnA were analyzed using Atomic Absorption Spectrophotometer and Neutron Activation Analysis, while MnB and MnU were analyzed using Atomic Absorption Spectrophotometer. The average MnA levels of welders and controls were 0.034 mg m3and 0.0004 mg m3, respectively. MnB levels in welders and controls ranged between 0.0029 mg L1– 0.0369 mg L1and 0.0034 mg L1– 0.0169 mg L1, respectively. The mean of MnB concentration in welders was 0.0131 mg L1, statistically significant higher than mean of MnB in controls and higher than normal MnB. MnU in welders ranged between 0.00032 mg L1– 0.0133 mg L1, while MnU in controls ranged between 0.00024 mg L1 – 0.0105 mg L1. Evidently, mean concentration of MnU in welders was 0.0042 mg L1, higher than controls, which was 0.0023 mg L1. The risk of welders in having MnB above normal was 2.5 fold than controls, and 2 fold than controls in having MnU above normal. The result seemed to indicate that MnB and MnU could only be used in assessing manganese exposure in group basis
