查询词典 hexavalent

Restrain to use heavy metal such as Lead, Hg, Cadmium and Hexavalent Chrome etc.

限制使用铅、汞、镉和六价铬等重金属。

The performances of MgAl-LDH for adsorption and desorption of hexavalent chromium were studied.

它的焙烧产物在一定条件下可重新吸收水和阴离子恢复为LDH的层状结构，在处理磷酸根，砷酸根，硒酸根，铬酸根等阴离子时显示出很好地效果。

The recent advancement of the relevant study on hexavalent chromium pollution in electroplating waste water is reviewed.

Cr主要被吸附在固体物质上面而存在于沉积物中；Cr多溶于水中，而且是稳定的，只有在厌氧的情况下，才还原为Cr。

Influence of TP on adsorption of hexavalent chromium in the clay was investigated.Effects of reaction time,pH,concentrations of TP and adding amount were studied.

0引言土壤是人类生存环境的重要组成部分，也是人类周围环境中污染物的最大承担者[1]。

Removal of hexavalent chromium from aqueous solution by iron nanoparticles.

太湖春季水体中的胶体有机碳含量及影响因素分析。

In addition, we provide cadmium, l ead, mercury, hexavalent chromium, PBB and PBDE, analysis of packaging materials and

此外，我们提供的镉，1 部、汞、六价铬、多溴联苯和pbde，分析包装材料和部件为符合欧盟的规定等。

All companies in Thailand in early 2002 that a 'high-tech world, as China's first China Aerospace Group / Houston hospital / yellow rope lead the entire group radiation center Thai Plant, in full production, pyrocondensation Casing has approved UL / cUL International Security Certification, the industry took the lead at home and abroad by SGS comprehensive test: lead Pb, Cd Cd, mercury Hg, hexavalent chromium Cr, PBB PBBS, PBBs ether PBDES.

全泰公司于2002年初在著称'世界高科技、中国第一照的中国航天集团/中国火箭院/中国黄缆集团辐照中心筹建全泰二厂，已全面投产，热缩套管已通过UL/cUL国际安规认证，国内外同行业率先全面通过SGS测试：铅Pb、镉Cd、汞Hg、六价铬Cr、多溴联苯PBBS、多溴联苯醚PBDES。

Thus, SRB were likely to reduce sulfates to sulfides simultaneously with petroleum oxidization, and directly or indirectly reduce hexavalent uranium U to tetravalent uranium U to precipitate pitchblende.

于是，利用烃类作为生存的碳源，硫酸盐还原菌将硫酸盐还原的同时，直接或间接地把六价铀U还原成四价铀U，导致沥青铀矿形成。

Procedures: First prepare 10 gradient solutions with hexavalent Chromium ion (prepared from K2Cr2O7 ) from 0.07 ppm to 0.70ppm. Then 10 unbudded hydras are put into each solution in separate containers.

准备10组梯度的Cr6+离子从0.07ppm到0.7ppm，每组分别放入10个不出芽的水螅。

Occupational Safety and Health Administration will decrease hexavalent chromium PEL-TWA from 0.1 mg/m3 to 0.001mg/m3 in workplace air. And Council Labor Affiar in Taiwan considers to follow this step.

假以美国职业安全卫生署预定在2005年将容许浓度降低一百倍为0.001 mg/m3，我国劳工委员会也考虑降低容许浓度。

By the time of its fall, most of the prisoners were writers who had written against the corruptions of the government.

到它被攻陷的时候，里面多数的犯人是写了反对政府贪污文章的作家。

The most obvious variation to ovum morphological character was that the color was changed from light green to sepiaceous in embryonic development, and all the ovums were almost hatched after 96h.

在胚胎发育过程中卵的形态特征最明显的变化是颜色从淡绿到深褐色，卵在发育96h后卵基本全部孵化。