Ulfvarson U, Wold S
Scand J Work Environ Health. 1977 Dec;3(4):183-91. doi: 10.5271/sjweh.2774.
The concentrations of 17 trace elements (e.g., copper, cobalt, iron, manganese, chromium, silicon and magnesium) were determined in whole blood samples of 81 persons working with different welding methods on stainless steel or aluminium and 68 nonwelders. Inorganic spark source mass spectrometry was used for the chemical analyses. The data were analyzed by the SIMCA method for pattern recognition (discriminant analysis). No differences were found between the five groups, either in the average levels of the trace elements or in the correlation structures between the trace elements. Thus no blood concentration data on the analyzed elements and collected from a single person contained any information with respect to exposure to the welding fumes investigated.
对81名使用不同焊接方法焊接不锈钢或铝的工人以及68名非焊接工人的全血样本中17种微量元素（如铜、钴、铁、锰、铬、硅和镁）的浓度进行了测定。采用无机火花源质谱法进行化学分析。运用SIMCA模式识别方法（判别分析）对数据进行分析。在五组之间，无论是微量元素的平均水平还是微量元素之间的相关结构，均未发现差异。因此，从单人采集的关于所分析元素的血药浓度数据中，不包含任何与所研究的焊接烟雾暴露相关的信息。
