中文摘要：

综述了不锈钢焊接烟尘中六价铬(Cr(Ⅵ))的影响因素、检测及控制、产生机制,指出:1)保护气体氧化性越高,焊接烟尘中Cr(Ⅵ)占烟尘中总Cr质量比越高;气体保护焊(gas metal arc welding,GMAW)时,短路过渡比射流过渡烟尘中Cr(Ⅵ)占总Cr的质量比高.2)焊材中的K、Na易同烟尘中Cr(Ⅵ)化合物离子CrO2-4、Cr2O2-7形成稳定的Na2CrO4和K2CrO4,应将其限制在一定的范围内.3)固-液提取检测方法检测Cr(Ⅵ)与固态物种检测相比具有造价低、易操作和适合定量检测的优点.

英文摘要：

In this paper, the related influencing factors, detection, control and generation mechanism of hexavalent chromium ( Cr( Ⅵ)) in stainless steel welding fumes were reviewed and analyzed. It was found that the proportion of amount of Cr(VI) in the whole Cr in the fumes increased with the increase of oxidation of welding shielding gas. The K and Na elements in welding consumables, having tendency to cause chemical reactions with CrO2 -4 and Cr2 O2 -7 to form stable Cr(Ⅵ) compounds, should be limited to a certain range. Furthermore, the solid-liquid extraction detection method has remarkable advantages of low cost, easy operation, and suitable for the quantitative detection compared with the solid species detection method.