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Under 300 W medium mercury lamp, the quantum yields of petroleum hydrocarbons at 365 nm were determined by potassium ferri-oxalate actinometer. And their reaction kinetics constants were measured too.

并采用高光密度法,以K3Fe(C2O4)3做光露计,300W中压汞灯为光源,在365nm波长处测定石油烃类的反应速率常数和量子产率。

This type of catalysis advantageously replaces the conventional catalysts based on mercury salt.

这类催化有利地代替以汞盐为主要成分的通常催化剂。

Chunk-light tuna is preferable to albacore or sushi, because it usually contains fewer contaminants, such as mercury.

吞拿鱼比青花海产鱼更好,更加适合做生鱼片,因为它所含的污染物比如汞比较少。

The results showed that mercury chloride (0.5 and 1.5mg/kg BW) had obviously toxicity to the liver and the kidney of mouse, and the dose of 1.5mg/kg BW could damage the ovary function and reduce the number of superovulation oocytes.The results also showed that mercury chloride could inhibit the extruding of the first polar body and affect the quality and the viability of mouse oocyte and reduce the rate of IVF,but little impact on germinal vesicle breakdown of mouse oocyte in vivo.

结果表明,0.5和1.5mg/kg BW汞对小鼠的肝脏、肾脏有明显的毒性作用,1.5mg/kg BW组还对卵巢有明显的毒性作用,并能显著降低超排卵的卵母细胞数;汞对体内卵母细胞生发泡破裂没有影响,但可以抑制卵母细胞第一极体的释放,影响卵母细胞的存活率并降低体外受精率。

Respectivey, The methylmercury levels of human hair for mercury mine workers, children and pregnam women living near the mine area have been compared with that of those living at nonpol luted .

本文采用气相色谱法测定人发中甲基汞,对人发的酸度、浸取时间、人发与酸液的比例,以及无机汞存在的影响作了测定和选择,方法的平均回收率96.6%,精确度2.8%,方法可靠性用氢化物原子荧光法核对,结果一致。

Common transparent quartz tube SiO2 more than 99.9% purity, geometry, chemical stability, thermal stability, resistance to thermal denaturation and anti-crystallization properties of the fine, optical transmittance above 93%; from hydroxyl in hydroxyl tube below 10ppm, after vacuum from hydroxyl, hydroxy-up to 5ppm below apply to high-pressure mercury lamp, sodium lamp, metal halide lamp, such as low-hydroxy products; white pipe, used mainly for heating tube, heating tube, far infrared control the manufacture, milky quartz pearl quartz tube possession of new technology, the management side as if the surface of pearls, all aspects of performance than ordinary white tube better; filter tube to filter out ultraviolet UV band in the harmful wavelengths of 190-320nm ultraviolet light source applied to environmental protection manufacturing; no ozone UV filter tube and pipe the contrary, through the ultraviolet wavelength around 253.7nm, there is no ozone UV lamp main material, widely used in medical equipment, water treatment, food hygiene, such as sterilization; quartz casing diameter 8-120mm in between, has a single opening, double opening round, flat-top shape and widen the mouth of necking, flanging, sanding and other processing, high temperature resistance, corrosion resistance, good light transmission and moisture-proof, explosion-proof characteristics such as widely used in aquarium thermostat, disinfection equipment, heating pipes, water treatment, metal halide lamp, such as product manufacturing and environmental protection, health, chemical and other fields; quartz Clamshell specifications 8-180mm, the shape according to the customer requirements, the bubble shell can take capillary has to carry out the exhaust, high temperature, light transmission is good, mainly for JC, JD, H1-H7, the stage lights and high-pressure mercury lamp, sodium lamp, metal halide lamp, such as product manufacturing; quartz water jacket mainly used in printing and packaging processing industry ---- UV light-curing, UV light curing is a very reliable and can be used to replace hot air dryers and other drying technique of curing technology, which in the printing and packaging of the processing industry has been widely.

普通透明石英管SiO2纯度达99.9%以上,几何尺寸、化学稳定性、热稳定性、抗热变性和抗析晶性能优良,光学透过率达93%以上;脱羟管羟基在10ppm以下,经过真空脱羟,羟基可达5ppm以下,适用于高压汞灯、钠灯、金卤灯等低羟基产品;乳白管,主要用于发热管、加热管、远红外管的制造,珠光石英管乳白石英管之新工艺,管面好象珍珠的表面,各方面性能比普通乳白管更优;滤紫外线管能够滤除紫外光谱波段中对人体有害的190-320nm波长的紫外线,适用于环保光源的制造;无臭氧管与滤紫外线管相反,可透过253.7nm左右波长的紫外线,是无臭氧紫外线杀菌灯的主要材料,广泛用于医疗器械、水处理、食品卫生等杀菌;石英套管直径范围在8-120mm之间,有单开口、双开口、圆头、平头等外形和扩口、缩口、翻边、磨砂等加工,具有耐高温、耐腐蚀、透光性好及防潮、防爆等特点,广泛使用于水族恒温器、消毒设备、加热管、水处理、金卤灯等产品的制造和环保、卫生、化工等领域;石英泡壳规格Φ8-180mm,形状根据客户要求,泡壳上可以接有毛细管,可进行排气,耐高温,透光性好,主要用于JC、JD、H1-H7、舞台灯和高压汞灯、钠灯、金卤灯等产品的制造;石英水套主要用于印刷和包装加工工业---- UV光固化, UV光固化是一种十分可靠的、可取代热空气干燥机和其他干燥技术的固化技术,它在印刷和包装加工工业已经得到广泛应用。

Under the working conditions of alkaline zinc electrodes and in the range of charge and discharge potential, the composite inhibitors were proved to have good chemical and electrochemical stability themselves, and to keep their effect for a long time.

最后,通过双电层电容的测量、电化学阻抗谱、稳态极化曲线和红外光谱的分析,提出了复合代汞缓蚀剂的吸附行为理论、缓蚀作用机理和协同作用机理,很好地解释了实验的结果,并为进一步选择、设计复合代汞缓蚀剂提供了理论基础。

The relationships between Hg concentrations (Hg, mg/kg flesh wt.) and fork length established in both oceans, as Hg=0.0207 FL-1.5542 (r=0.9022) for Atlantic Ocean and Hg=0.0080 FL+0.2186 (r=0.4864) for Indian Ocean, and with a significant difference of slope. It is suggested that different Hg accumulation patterns may exist in different oceans.

两洋区白色肉总汞浓度与尾叉长的直线相关式,分别是大西洋为Hg=0.0207FL-1.5542(r=0.9022)及印度洋为Hg=0.0080FL+0.2186(r=0.4864),並呈现显著的斜率差异,因而推测不同洋区的剑旗鱼可能存在不同的汞蓄积模式。

After preliminary study, it is found that the main factors which control the hydrocarbon and mercury anomaly patterns to form upon metallic ore deposits have four: a.

经初步研究表明,金属矿床上方形成各类烃汞异常模式的主要决定因素有四个:一是烃汞运移的通道;二是成矿期的热差效应;三是金属硫化物的氧化作用:四是地温差异。

The titrant is a mixture of EDTA and sodium fluoride, both mercury film electrode and fluorinion selective electrode are inserted in the titration solution. In a process of titration, both the added volume of titrant and the concentration of mercury ion at each titration point can be obtained simultaneously from the potentials of two electrodes, and then the concentration of each component in the alloy can be obtained from the titration curves by multivariate calibration.

用ED-TA与氟化钠的混合溶液作为滴定剂,被滴定液中同时插入了汞膜电极和氟离子选择电极,在滴定过程中的任一滴定点,溶液中汞离子的浓度和滴定剂的加入体积可由两个电极的电位测定值同时获得,从而可应用多元校正法由相应的滴定曲线求得混合金属中每一种组分的含量。

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