Since 1980s, the contents of heavy metal ions Cr~(3+), Co~(2+) have strictly been limited in textile. At the same time, the price of iron salt and aluminum salt is far lower than chromium salt and cobalt salt.
自20世纪80年代以来,各国对纺织品中重金属离子Cr~(3+)、Co~(2+)含量进行了严格的限制;同时,由于铁、铝盐的价格要远低于铬盐和钴盐,因此,研制新的环境友好的偶氮铁铝金属络合染料具有重要的意义。
参考来源 - 新型金属络合染料的合成及应用性能研究·2,447,543篇论文数据，部分数据来源于NoteExpress
The first method use less reagents and avoid the secondary pollution from silver salt and mercuric salt and chromium salt with short digestion time which reduce the energy.
试验过程试剂用量小，减少了银盐、汞盐、铬盐带来的二次污染问题；消解过程短，能有效降低能耗。
A complete utilization new method of zero discharging chromium poison and resource is used to process the waste residue which is discharged in metal chromium and chromium salt producing process.
铬毒零排放及资源完全利用新方法，是处理金属铬和铬盐生产过程中排放的废渣。
By the reduction on industrial Chromic anhydride-methanol, the trivalent chromium main salt was made. The technological formula and standard of Chromium-Nickel alloy electroplating were given.
采用工业铬酐-甲醇还原法制备三价铬主盐，给出了电镀铬-镍合金工艺配方与工艺规范并对镀层性能进行了测试。
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