Platinum group elements (PGEs) find
extensive use in high technology applications due to their unique chemical and physical
properties. Some of these are in vehicle exhaust catalysts, medicine,
electronic and chemical industries, etc. The widespread use of PGEs for various
applications, particularly in vehicle catalytic converters and tumor treatment,
etc., is leading to the increased release of these elements into the environment.
Studies have shown that, under suitable conditions, certain chemical forms of
PGEs emitted from vehicles could become bioavailable.[1,2] Determination
of these elements is important for understanding the chemical nature of PGEs in
environmental samples and their impact on ecological and biological systems.[3–5] The
metallic forms of PGEs are generally considered to be inert as regards
biological reactions. On the other hand, certain PGE compounds are known to be
cytotoxic and to have mutagenic and carcinogenic effects and they are among the
most potent allergens and sensitizers.[3] Due
to the increase in the use of Pd in place of Pt in catalytic convertors, a
predominance of the former element in airborne particulate matter has been observed
over the last decade.[6] This
increase in the concentrations of Pd in environmental samples is of concern because,
among the PGEs, Pd has the highest bio-accessibility and mobility in the
environment.[7] The process of thermal neutron induced fission of fissile
nuclides, e.g. 235U, 239Pu,
leads to the production of a wide range of fission
products in varying quantities. Palladium (Pd), rhodium (Rh) and ruthenium (Ru)
are the only three PGEs formed to a significant
extent during the nuclear fission process.
The actual amounts of formation of these PGEs depend on the type of reactor
system as well as on the burn-up of the nuclear fuel.[8,9] With
the future development of a proper recovery and decontamination process, the availability
of these metals is likely to increase and they can thus serve as an alternative
resource to meet the increasing demand for noble metals.[10] A reliable analytical procedure for the quantification of the PGEs is, therefore,
important at different stages of reprocessing. Analytical methods have been
described for the determination of PGEs in synthetic and actual nuclear waste
solutions.[11,12]
2021-09-20
简要介绍 dSPE 在全自动移液工作站上应用实现全自动抗体纯化的原理。
比较了三种 Protein A 纯化 HIgG 的效率及纯化流程优化方法。
使用 IMCSTips 实验全自动纯化(一步)方法及数据分析
2021-09-20
1. IMCStips 应用原理展示
2. His-tagged 蛋白纯化流程优化及数据分析
2021-09-20
IMCStips 亲和层析柱
● 一次层析即可快速产生高纯重组蛋白
● 一致性好、回收率高,个样品的差异不到 10%
● 可结合各种复杂方法的模板化工作流
● 与 Hamilton 移液工作站结合,可在 30 分钟内处理 96 个样品
● 可定制的工作流程
2020-02-08
BenchWaver™ 把传统的平台摇摆运动与轨道振动器的圆周运动结合起来,这种最优组合能够产生最适合分子生物学应用的三维运动。
2020-02-08
强力混匀,适于细胞裂解、研磨或均质
与通用的组织研磨机更快速、更高效
采用密封2.0mL管,消除交叉感染
中通量,可同时处理3~6个样品
无锡微色谱生物科技有限公司
WuXi MicroSep Biological Science Co,. Ltd.
地 址:江苏省江阴市月城镇北环路 19 号
电 话:17715681752
工作时间:周一 ~ 周五 9:00 ~ 16:00