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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。

In order to observe the effects of mercuric chloride to physiological and biochemical indexes of blood at low doses in SD rats, 24 SD rats were separated into control group, low dose group of mercury (50 mg/L), middle dose group of mercury (100 mg/L), high dose group of mercury (200 mg/L), which were given in the drinking water.

为了研究低剂量汞对SD大鼠血液生理生化指标的影响,24只SD大鼠被随机分为4组,分别为对照组,汞低剂量组(50 mg/L),汞中剂量组(100 mg/L),汞高剂量组(200 mg/L),采用自由饮水染毒,染毒时间为21d。

A rectifier used in high-voltage direct current power transmission systems and industrial processing between about 1909 to 1975 is a mercury arc rectifier or mercury arc valve .

汞弧为整流高压直流电源传输系统中的使用和工业加工 1909年到 1975年之间是汞弧整流器或汞弧阀。

The intensity ratio of TO and LO inMCT was observed to be different. Such difference was explained in terms of the different Ramangeometry arrangement.〓. The laser-induced micro-photoluminescence in the range of 1000~5000〓(1.34eV~1.83eV) was found for the first time in LPE MCT epilayer. The center of photoluminescence wasat 2750〓 or 1.62eV and the FWHM of luminescence was 2000〓 or 0.25eV. We assume thatthe photoluminescence is due to recombination of electron from an anion vacancy resonance levelto the top of valance. In addition, new Raman shift was observed at 750〓 in LPE MCTepitaxial film.〓. The laser-induced micro-photoluminescence with quasi-periodic structure was observed forthe first time at room temperature in one of MOVPE MCT epitaxial film samples. The range offluorescence was from 1.46eV to 2.21eV, i.e., 1.73eV above the conduction band edge.

2首次在LPE生长的碲镉汞外延薄膜的显微Raman谱中,在1000~5000〓范围发现了激光激发显微荧光,该荧光的发光范围换算为电子伏特标度为1.34eV~1.83eV,荧光的发光中心大约位于2750〓,即1.62eV,发光的半峰高宽约为2000〓或0.25eV;指出该显微荧光来源于碲镉汞薄膜中的阴性离子空位共振能级的激光激发发光;观察到了碲镉汞外延薄膜中一个新的Raman散射峰,位于750〓位置; 3首次在一块用MOVPE方法生长的〓Te外延薄膜的显微Raman谱中,发现了1.46eV至2.21eV范围并伴随有周期结构的显微荧光峰,该发光峰对应的能带中心位于〓Te材料导带底上方1.73eV,通过研究得出样品在1.46eV至2.21eV范围的显微荧光峰是由于改进 MOCVD 生长工艺,提高了碲镉汞外延薄膜的结构质量所致;通过分析指出该显微荧光来源于外延层中的阴性离子空位的共振能级发光。

More than half of an amalgam filling is made up of mercury, which is more poisonous than lead.

专家指出,金属汞对人体的伤害比金属铅更为严重。而在这类汞金属混合物中,汞金属含量超过一半以上。

Mercury contents in the polluted rivers and soils are usually high when it is high in the goldmine wastewater and tailings debris. Because the environment polluted by mercury is very difficult to recover and some biology can highly enrich mercury in their bodies, it is necessary to strengthen manage the tailings debris and ban amalgamation process and the low technique individual gold digger.

金矿废水废渣中汞含量高,则受其污染的河流和土壤中汞含量也相应较高,由于环境汞污染的永久性和难修复性,以及某些生物对环境中的汞有富集放大作用,因此除了加强对已产生的尾矿渣的管理外,还应该坚决取缔混汞法和技术水平低下的个体采金行为。

Although it is known that small amounts of mercury are vaporizedwhen the fillings are used to chew food,and though Canada,France and Sweden have all placed restrictions on the use of mercury fillings,the FDA has always insisted that amalgams are safe.

所谓的银汞合金或者是填充材料,是用汞和其他材料混合制成的,这种方法从1800年就使用了尽管知道当填充材料用于咀嚼食物时少量的汞能被蒸发和吸入,尽管加拿大、法国和瑞典都将限制使用汞补牙,美国食品药品管理局还是坚持汞合金是安全的

With the success of his first VTOL flight, Dr. Moller began to re-engine the XM-2 in 1966 with two Mercury outboard engines XM-2 in flight under UC Davis sponsorship.

与成功,他首先垂直起降飞行,博士马勒开始重新引擎的XM - 2 ,在1966年2汞的舷外引擎的XM - 2的飞行下,戴维斯加州大学的赞助。

The reaction mechanism,process,operation conditions and main technical indexes for the synthesis of vinyl chloride from acetylene were introduced briefly as well as the specification and preparation method of mercuric chloride catalyst s.

简单介绍了乙炔法合成氯乙烯的反应原理、工艺流程、操作条件和主要技术指标,以及氯化汞催化剂的规格和制备方法,讨论了氯化汞催化剂的缺陷,总结了在减少汞流失方面对氯化汞催化剂进行改良的进展情况。

He made discoveries relating to a mercury chloride called corrosive sublimate.

他发现了氯化汞的升华现象,由此制备而成的药膏可用来治疗被腊泽斯描述为&瘙痒&的症状,也就是今天所说的疥疮。

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