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Experimental results show that hydrogen can be produced by the reaction between nitric acid with a given concentration and aluminum handled by means of mercuric bichloride solution under room temperature. Whereas hydrogen is not detected without aluminum handled by mercuric chloride solution.

研究发现,室温下用去膜并经氯化汞溶液处理过的铝箔与一定浓度的稀硝酸作用可产生氮气,而未经氯化汞溶液处理的铝箔与稀硝酸作用几乎检测不到氮气的生成。

Reaction conditions are studied, and the result shows that it is better to adopt mercuric oxide or mercuric fluoride as fluorination catalyst with reaction temperature -20~-10℃.

结果表明,采用氧化汞或氟化汞作氟化催化剂、氟化氢作溶剂较好,适宜的反应温度为-20~-10℃,较长的反应时间(48 h)和增加氟化氢和催化剂的量有利于氟化。2-氯-5-三氯甲基吡啶的转化率和选择率均可达到97%以上。

Safety and quality for agricultural product safety demand for non-environmental pollution fruit (GB 18406.2-2001) prescribes eight heavy metals and harmful substances in apple, such as arsenic, hydrargyrum, lead, cadmium, chrome, fluorine, nitrite, nitrate and also the residue limit of 22 pesticides.

另外,发布实施的《食品中污染物限量》(GB 2762-2005)规定了苹果中铅、镉、汞、无机砷、铬、硒、氟和稀土等8种污染物的限量标准[1];《食品中农药最大残留限量》(GB 2763-2005)规定了苹果中49种农药的残留限量[2];《农产品安全质量无公害水果安全要求》(GB 18406.2-2001)规定了苹果中砷、汞、铅、镉、铬、氟、亚硝酸盐、硝酸盐等8种重金属和有害物质以及22种农药的残留限量[3]。

The six major mercury deposit s in Guizhou Province are different fromeach other in minor element characteristics of ores and cinnabar,and theirdispersed elements and rare earth elements,in particular,have respective dis-tinguishing features.

贵州6个不同类型的主要汞矿床,其矿石和辰砂的微量元素,特别是其中的分散元素和稀土元素有着明显差别,表明各汞矿床的成矿物质来源是不相同的。

The result was compared with oxidations of cyclohexene without irradiation and at irradiation without catalyst.

另外,本文还研究了各种类型的催化剂在中压汞灯下光催化环己烯的氧化反应,结果表明,无论上述的哪种催化剂,在中压汞灯下光催化环己烯氧化反应,都得不到环氧环己烷,生成的产物主要为水和二氧化碳。

After electroreduction of ZME loaded Hg, metallic mercury particles are located on the internal and external surface of microporous system, the sizes of which are limited by the sizes of the zeolite cages.

分子筛离子交换点位上的Hg〓通过电还原成为Hg〓,在表面张力的作用下,Hg〓聚集成汞束定位在沸石分子筛孔系统的内表面和外表面,其汞束的聚集程度受分子筛尺寸的限制。

Keep in mind that the stomach successfully abso rbs a n d excretes about 90% of any mercury ingested through food, leaving only about 10% of the mercury to be abso rbed into the bloodstream.

紧记:胃成功的吸收并排泄了从食物中摄取的90%的汞,留下仅10%的汞被吸收倒血液中。

The molecules involving azo and imino functional groups can coordinate with Hg2+ to result in a large blue shift from 453 to 363 nm corresponding to a notable color change from orange to pale yellow in aqueous methanol solution (H2O/CH3OH=1/4, V/V), which can be applied to naked eye detection of Hg2+.

这些传感器分子包含偶氮和亚胺功能基团,在水/甲醇溶液(体积比1/4)中,可以与汞离子配位,使紫外-可见光谱中吸收峰发生由453到363 nm的蓝移,引起一个明显的溶液由橙色到淡黄的颜色变化。因而,这些传感器有肉眼检测汞离子的潜在应用。

Thus, the research on the mechanism and kinetics of such reaction has been a focus of understanding the influence of coal combustion on the air for scientists. In this paper, we put emphasis upon the reaction mechanism and kinetics of mercuric and stannic oxidation by oxidants. Up to date, the experiments showed that mercuric chloride species were the main products of mercuric oxidation, but the microscopic mechanism and kinetics of it were not well understood.

研究这些重金属元素在煤燃烧过程的化学反应机理及反应动力学特征,是目前研究煤燃烧对大气影响的重要的研究课题,本文中我们重点研究煤燃烧过程中汞和锡生成氧化物和氯化物的机理与反应动力学,煤燃烧过程实验发现汞系列产物主要是氯化物,但对其微观反应机理和反应动力学研究很少有报道。

The rapid rise in the number of these diso rders co rresponds to the dramatic increase in the amount of Thimerosal (49.6% ethylmercury by weight) given in recommended vaccines to children under two years of age.

这些疾病患者数量的快速增长与2岁以下婴儿推荐疫苗中硫柳汞(其重量的49.6%为乙基汞)的显著增加相一致。

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