Milatou-Smith R, Gustavsson A, Sjögren B
Swedish National Institute for Working Life, S-171 84, Solna, Sweden.
Int J Occup Environ Health. 1997 Apr;3(2):128-131. doi: 10.1179/107735297800407749.
Hexavalent chromium particles are generated in the welding of stainless steel. A cohort consisting of 233 welders working on stainless steel and exposed to high levels of chromium was selected. According to an earlier survey, the hexavalent chromium exposures of such welders are often above 20 µg/m(3). Another cohort consisting of 208 railway track welders exposed to low levels of chromium was also selected. The participants of both cohorts had welded for at least five years between 1950 and 1965 and were followed for mortality until December 1992. Among the welders exposed to high levels of chromium, six deaths due to pulmonary tumors occurred. This number is higher than the two deaths that occurred among the welders exposed to low levels of chromium and the corresponding mortality of the general population, but not significantly higher. Thus, exposure to stainless steel welding fumes might increase the incidence of pulmonary tumors.
在不锈钢焊接过程中会产生六价铬颗粒。选取了一组由233名从事不锈钢焊接且接触高浓度铬的焊工组成的队列。根据早期调查，这类焊工的六价铬暴露量通常高于20微克/立方米。还选取了另一组由208名接触低浓度铬的铁路轨道焊工组成的队列。两组队列的参与者在1950年至1965年间都至少焊接了五年，并随访其死亡率直至1992年12月。在接触高浓度铬的焊工中，有6人死于肺部肿瘤。这个数字高于接触低浓度铬的焊工中发生的2例死亡以及普通人群的相应死亡率，但并非显著更高。因此，接触不锈钢焊接烟雾可能会增加肺部肿瘤的发病率。
