水污染分析校准用汞溶液的研制
摘要:研制了水污染分析校准用汞溶液.采用原子荧光光谱法对样品进行了均匀性和稳定性检验,对样品的量值进行了验证并进行了不确定度评定.检验结果表明:汞溶液均匀性良好,室温条件下可稳定36个月以上;样品的标准值为100 mg/L,扩展不确定度为2 mg/L.样品量值与美国AccuStandard公司同种标准物质具有一致性.可用于水中汞检测的测定标准、质量控制、分析方法研究以及实验室能力验证等方面
Certified reference materials for Poly Brominated Biphenyl Ether (PBDE)
摘要:AccuStandard is one of the few companies in the world that offers all the 209 congeners for the Poly Brominated Diphenyl Ether (PBDE) compounds. PBDEs are synthetically made chemicals that are mainly used as flame retardants. They are commonly added to plastic, textiles and electronic equipment. Similar to other brominated flame retardants, exposure to PBDEs is associated with serious health consequences such as cancer, development disorders and reproductive health effects. Testing for PBDEs in water and soil are critical for environmental regulation compliance and to minimize the public exposure to these chemicals. AccuStandard PBDE CRMs include neat, single and multiple component mixtures for USEPA, EU and ISO test methods. Products also include PBDE metabolites (Hydroxy and Methoxy PBDEs), fluorinated PBDEs (FPBDEs) used as an internal standard and bromophenols and bromoanisoles.