用ICP—AES测定含铁尘泥中CU、Ni、Cr、Mn、Zn、Pb、Cd元素

在冶金企业中每年要产生大量的含铁尘泥。其中产要来自转炉尘泥、烧结灰、高炉瓦(?)、轧钢的氧化钢皮等等。

用IRIS/AP-ICP-AES法同时测定废水中的Cd、Cr、Cu、Ni、Pb和Zn

本文采用 IRIS/AP- ICP- AES法同时测定废水中的 Cd、Cr、Cu、Ni、Pb和 Zn。选择了最佳的仪器工作条件 ,并选取了被测元素的最佳谱线。样品中的干扰因子通过谱线的背景校正方法予以消除。本法操作简便 ,结果准确 ,其相对标准偏差均小于 2 % ,回收率在 98%— 1 0 4%之间。

Seaweeds as Biomonitoring System for Heavy Metal (HM) Accumulation and Contamination of Our Oceans

This research manuscript reports the heavy metal accumulation in four marine seaweeds sp. 1)?Caulerpa sertlatioides (Cuba);2) Caulerpa cf. brachypus;(Bali, Indonesia);3) Undaria pinnatifida (West-Donegal, Ireland);4) Ulva lactuca (Easters-Scheldt, the Netherlands). Mechanical pressure at 10 bar of fresh seaweed fronds casu quo biomass in the laboratory delivered seaweed moisture which was analyzed by Inductively Coupled Plasma Spectroscopy (ICP)-techniques for heavy-metals = [HM], (Al, As, Cd, Co, Cr, Cu, Fe, Mo, Ni, Pb & Zn). Three important observations were made: 1) The [HM] in the seaweed moisture is higher than in the surrounding seawater which directs to mechanism(s) of bio-accumulation;2) The accumulation factor [AF] is varying per metallic-cation with an overall trend for our four seaweeds and sampling locations for [HM] are: As & Co & Cu: 5000 - 10,000 μg/l;Ni & Zn: 3000 - 5000 μg/l;Cd: 2000 - 3000 μg/l;Cr: 1000 - 2000 μg/l;Al: 200 - 1000 μg/l;Mo & Pb & Fe: 0 - 200 μg/l range. 3) Seaweed moisture detected that [HM]: Pb & Zn & Fe—which all three could not be detected in the seawater—supports the view that seaweeds have a preference in their bio-accumulation mechanism for these three HM. Major conclusion is in general that “overall” for the macro-elements Ca, Fe, K, Mg, Mn, Na, P & S in the moisture of the four seaweed species the concentration is lower in the seaweed species, or equals the concentration, in comparison to the surrounding sea water. For the HM (Al, As, Cd, Co, Cr, Cu, Mo, Ni, Pb & Zn) the opposite is the case species and is the concentration “overall” higher in the seaweed species in comparison to the surrounding sea water. Further topics addressed include strategies of irrigation of the Sahara desert with the moisture out of seaweeds under conditions of low anthropogenic influences.

ICP-AES测定多目标水地球化学普查样品中的14种微量元素

采用IRIS Intrepid II SXP ICP光谱仪,对地球化学普查水样中Ba、Be、Cd、Co、Cr、Cu、Fe、 Mn、Mo、Ni、P、Pb、Sr和Zn等元素的测量条件进行了探讨,优化了实验条件,进行了大批量实际样品的测定。方法简便,快速。检出限、精密度和准确度均符合质量管理的要求。

ICP-AES同时测定固体废物浸出液中钡、铍、镉、铬、铜、镍、铅和锌

采用醋酸缓冲溶液对固体废物样品进行浸提,经硝酸-盐酸消解后,ICP-AES测定消解液中的钡,铍,镉,铬,铜,镍,铅和锌。本方法具有检出限低、再现性好、分析效率高等优点,适用于固体废物浸出毒性的测定。

微波消解、ICP-AES快速测定污泥中的铜、铅、锌、镉、铬、镍、锰和磷

本文采用微波消解样品、电感耦合等离子体 -原子发射光谱法 (ICP- AES)快速测定城市污泥中农用控制微量元素 Cu、Pb、Zn、Cr、Cd、Ni、Mn及有效肥料元素 P的含量 ,各分析元素的回收率在 96 .3%—10 4 %之间 ,相对标准偏差小于 4 .3% ,方法快速简便、准确度高、精密度好 ,结果令人满意。

微波消解等离子体发射光谱法测定铁矿石中14种元素的研究

报道用ICP光谱法测定铁矿石中14种指标元素。铁矿石试样在高压密闭容器中微波消解,砷等易挥发元素避免了损失,从而可以被同时测定。优化了微波溶样条件及ICP的工作参数,试验了共存元素影响和基体效应。校准用的标准溶液中加入铁作基体匹配。用该法分析了12个国内外有证标准物质,分析结果与证书值一致,从而验证了方法的准确度和精密度,满足铁矿石日常检验分析的要求。与现行的单元素分析方法相比,该法缩短了分析周期,适合大批量试样的分析,并已用于实际的检验工作中。