将准备好的酸性污染水放到每个烧杯中，加入不同剂量的氢氧化钙，碳酸钠和硫化钠粉末，使重金属以金属碱化物，盐化物和硫化物的形式沉淀出来。
The prepared acidic contaminated water was placed in each beaker and various dosages of lime , soda ash and sodium sulfide powders were added to precipitate the heavy metal as metal hydroxide , carbonate and sulfide respectively .
碱化物