Paints and varnishes . determination of " soluble " metal content . determination of hexavalent chrome content in powder paint substances 涂料和清漆.可溶金属含量的测定.粉末状涂料中六价铬含量的测定
The plating technique of trivalent chromium used now has many disadvantages such as low stability of solution , high cost of raw material 六价铬电镀工艺存在严重的环境污染问题,利用三价铬镀铬取而代之已经迫在眉睫。
Hexaalent chromium compounds are often used in electroplating , leather tanning , and textile manufacturing and hae been found in some drinking water sources 六价铬化合物常用于电镀,制革及纺织制造,还存在于一些饮用水水源中。
The two - year study conducted by the national toxicology program ( ntp ) shows that animals gien hexaalent chromium deeloped malignant tumors 这项为期两年的研究由美国国家毒理学计划( ntp )实施,证实了动物服用六价铬后会发生恶性肿瘤。
With certain exceptions , it now prohibits the sale of a packaging with a total concentration of lead , cadmium , mercury plus hexavalent chromium that exceeds 100 ppm 某些例外,禁止出售一种包装,以总浓度铅、镉、汞六价铬超过100分之多
Methods of test for paints - tests involving chemical examination of liquid paints and dried paint films - determination of hexavalent chromium content of solid matter 涂料试验方法.第b集:液体涂料与干涂料膜化学检验.第10部分:固态六价铬含量测定
Standard test method for the determination of hexavalent chromium in workplace air by ion chromatography and spectrophotometric measurement using 1 , 5 - diphenylcarbazide 用1 , 5 -二苯卡巴肼离子色谱法和分光光度测定法测定工作场所气体中六价铬的标准试验方法
Workplace air - determination of hexavalent chromium in airborne particulate matter - method by ion chromatography and spectrophotometric measurement using diphenyl carbazide 工作场所空气.气载颗粒物质中六价铬的测定.用二苯基卡巴胼的离子色谱法和光谱测定法
Workplace air - determination of hexavalent chromium in airborne particulate matter - method by ion chromatography and spectrophotometric measurement using diphenyl carbazide 工作场所空气.空中漂浮颗粒物质中六价铬的测定.使用二苯卡巴肼的离子色谱法和分光光度计测量法
Modified fly ash prepared by adding a mount of fly ash to blast furnace iron sludge with hcl has good effect to cr ( superscript 6 + ) and total chromium 摘要在粉煤灰中添加适量的转炉铁泥经盐酸溶解后,制得改性粉煤灰,在适宜的工艺条件下,对六价铬和总铬都有良好的处理效果。