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Three methods for polyform samples (ashing method, extraction by HNO3+H2O2 and digestion with aqua regia) were compared and the results showed that the second method is the best one.

进行了灰化法-王水提取、硝酸-过氧化氢消解-王水提取和沸水浴王水提取试样的比较实验,以硝酸-过氧化氢-王水提取法为最佳样品分解方法。

Zhejiang Yong Jia Hailong aqua regia HENRONG BLOWER AND PUMP FACTORY was founded in 1991, in the pumps, chemical industry and the development of fluid equipment sales, particularly in the development of the sewage pump has more than 10 years of history, in April 2003 through national production license qualified acceptance, Permit No.

浙江永嘉海龙王水泵厂创建于1991年,从事水泵、化工行业的流体设备研制和销售,特别是排污泵方面的研制已有十几年的历史,2003年4月通过国家生产许可证验收合格,许可证号:XK0

Experiments showed that inorganic mercury and phenyl mercury could be adsorbed by activated carbon in 0.5% aqua regia with adsorption time of 1.5 hours. The adsorption percentage was 97% for inorganic mercury and 96.5% for phenyl mercury.

结果表明,在活性炭用量为0.2g,φ=0.5%的王水介质中搅拌1.5h,无机汞和苯基汞的吸附率均达96%以上,无机汞和苯基汞的吸附容量分别为82.5μg/g和66.0μg/g。

Studied are the determining trace sulfur in iron, manganese ores and in cement by using spectroscopic method of inductancecoupling plasma emission, the selection of work conditions and the accuracy of results. As shown by tests, it is reliable to use aqua regia to resolve samples.

研究了利用电感耦合等离子体发射光谱法测定铁矿、锰矿、水泥等矿产品中微量硫的溶样方法、工作条件的选择和结果的准确性。

The purpose of the study is to investingate the feasibility of closed-microwave method instead of traditional aqua regia hotplate reflux method for heavy metal determination in soil.

中文摘要本研究利用密闭微波法消化土壤,并以火焰式原子吸收光谱法分析镉、铜、铅、锌四种金属元素,目的在探讨以密闭微波法取代传统王水热板回流消化法,测定土中重金属之可行性。

Thus the sample size can be increased, and the nugget effect and detection limits can be decreased compared with normal Carius tube technique. This new technique is capable of digesting 12 g samples in a 75 mL Carius tube with 35 mL aqua regia at 320℃, and Re and all the PGEs can be measured.

由此可以加大取样量,降低铂族元素测定过程中的块金效应及检出限,使超低含量铂族元素的测定成为可能。12g样品在75mL卡洛斯管中用35mL王水于320℃溶解15h,基本上可以使各种地质样品中的铂族元素矿物完全溶解。

PAHs ratios are used to identify the source of PAHs, the result showed that the major source of 16 PAHs in Urumqi Xinshi district was coal-bustion and vehicle discharges . Mercury in TSP samples were digested by aqua regia and analyzed by AFS analyzer .The results showed that : the concentration of mercury was 0.869-1.91 ng m-3.Compared with other cities in the rest of the world , the concentration of mercury was very high. The concentration of mercury in heating season was lower than that in no-heating season.

对大气颗粒物样品中的汞,采用王水于特弗龙消解罐中加热消解的方法进行处理,稀酸定容后采用原子荧光光谱法对样品中的汞进行测定,测定结果为。869-1.91 ng m-3,与国外城市相比较高;实验测得非采暖期乌鲁木齐大气颗粒物汞浓度的均值高于采暖期颗粒物中的汞浓度,其原因可能是由于随着非采暖期温的升高,长期积累在土壤、水体环境中的汞向大气中释放,附着在颗粒物上,过了燃煤的影响。

After the plasma etching of the diamond film, the Pt nanoparticles were removed from the specimen surface using aqua regia.

菱形薄膜完成等离子浸蚀之后,使用王酸将这些铂金纳米颗粒从样本表面移除。

To restore the ability of chromium can be dissolved in sulfuric acid, hydrochloric acid and High-FE acid and release hydrogen, but also of pure chromium with aqua regia does not work, when there is the presence of halogen ions in the acid can not be long-term stability, high temperature with alkali, hydrogen sulfide, sulfur steam, phosphorus, ammonia, such as carbon monoxide and water vapor reaction of the corresponding compounds, in the high temperature reaction of silicon into the silicide also chromium, chromium alloys with many metals generate a wide range of industrial applications, such as chromium-manganese stainless steel is used extensively for chemical plants.

铬的还原能力强,能溶于硫酸、盐酸和高FE氯酸而放出氢气,但纯铬连王水也不起作用,当有卤素离子存在时,在酸中不能长期稳定,高温时能与强碱、硫化氢、硫蒸汽、磷、氨、一氧化碳和水蒸汽等反应生成对应的化合物,在高温下还能与硅反应成硅化铬,铬能与许多金属生成合金广泛在工业上应用,如铬锰不锈钢大量用于化工设备。

Comparing it with the standard electrode potential of nitric acid,the reason of dissolution of HgS in aqua regia was quantitatively revealed,and this is that the high concentration of chloride ions reduces the reduction potential of sulfur in HgS,thus raising the reducing power of HgS rather than that the oxidizing power.

根据热力学平衡原理和设计的可逆电池反应,由 E~0Hg~(2++S/HgS数据,计算了 E~0HgCl_4~(2++S/HgS+4Cl~-数值,将其与 HNO_3的标准电极电位比较,定量地揭示了 HgS 溶于王水的原因在于该溶液中高浓度 Cl~-离子降低了 HgS 中硫的还原电位,从而提高了 HgS 的还原性所致,并非王水的氧化性比 HNO_3的更强。

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