他们坚信手机是“一种致癌物质”,将其危害等同于铅毒、发动机排气及三氯甲烷。
They determined that mobile phones are a " possible carcinogen, " listing use of the devices in the same category as lead, engine exhaust and chloroform, CNN reported.
以对甲氧基苯甲醛、三氯甲烷为原料,相转移催化羰基加成法合成了对甲氧基苯乙醇酸。
Based on the principle of phase transfer catalysis, 4-methoxy-phenylhydroxy-acetic acid was synthesized by the carbonyl addition reaction of 4-methoxybenzaldehyde.
采用丙酮加水提取土壤中的阿特拉津,再用三氯甲烷萃取,经浓缩、定容后,用毛细管气相色谱法测定。
Using acetone adds the water withdraws the atrazine in the soil, than extract with trichloromethane, after concentrated and settle to permit, use the capillary gas chromatography.
结果表明,与硫酸铝相比,三氯化铁可以更好地控制三氯甲烷的生成量,对有机物的去除方面,也具有良好的效果。
The results showed that: compared with that of aluminium sulphate, ferric chloride has priority over aluminium sulphate in controlling trihalomethane formation and organic matter removal efficiency.
以丙烯酸酯为单体,二乙烯基苯为交联剂,三氯甲烷为致孔剂,采用悬浮聚合法合成了轻度交联的多孔丙烯酸酯类吸油树脂。
Using acrylate as monomer, divinyl benzene as crosslinking agent, chloroform as microvoid agent, acrylate resin was synthesized by means of suspension polymerization. It had low crosslinking density.
目的通过对肇庆市某塑胶五金电子厂发生的一起急性职业性三氯甲烷中毒事故的调查分析,提出预防措施,杜绝类似事故的发生。
Through the investigation and analysis of a case of acute occupational trichloromethane poisoning, to put forward preventive measures and prevent the occurrence of similar incidents.
出于争论中心的气体是HFC-23(三氯甲烷)。以重量交换来衡量,这种温室气体包围热量的能力是二氧化碳的14800倍。
The gas at the centre of the controversy is HFC-23, a greenhouse gas which, on a weight-for-weight basis, is 14, 800 times better at trapping heat than carbon dioxide.
出于争论中心的气体是HFC-23(三氯甲烷)。以重量交换来衡量,这种温室气体包围热量的能力是二氧化碳的14800倍。
The gas at the centre of the controversy is HFC-23, a greenhouse gas which, on a weight-for-weight basis, is 14,800 times better at trapping heat than carbon dioxide.
当二氯苯氧氯酚经污水净化厂处理以产生饮用水时,它制出的并不全是安全的饮用水,相反,它会制造出包含三氯甲烷在内的其他化学物。
When triclosan is runthrough a treatment plant to make drinking water, it doesn't exactly make safe drinking water. Instead, it makes other chemicals that can include chloroform.
采用室内模拟实验方法,研究了二氯甲烷(DCM)、三氯甲烷(CF)、四氯化碳(CT)等氯代甲烷对小麦幼苗叶绿素含量和土壤呼吸率的影响。
The simulated experiments were conducted to study effects of chloromethane included DCM, CF and CT on wheat seedling chlorophyll and soil respiration.
本文通过实验的方法,用三氯甲烷处理4- 氨基安替比林溶液,解决了用4-氨基安替比林测定挥发酚实验空白值高的问题,并确定了三氯甲烷最佳使用量。
The chloroform solution of 4-Amino-antipyrine was used to measure the phenol in water by extraction and photometer. The method and the precision were discussed in this paper.
用碱熔法使海带中的碘以i-形式转移到溶液中,然后在酸性条件下用过氧化氢氧化,三氯甲烷萃取,经分光光度标准曲线法测得海带中碘含量大约为426。
I - was obtained from the kelp by alkali fusion, then oxidized by H2O2 in acidic solution, thus we can determine the iodine content by extraction spectrophotometry, which is about 426.
用碱熔法使海带中的碘以i-形式转移到溶液中,然后在酸性条件下用过氧化氢氧化,三氯甲烷萃取,经分光光度标准曲线法测得海带中碘含量大约为426。
I - was obtained from the kelp by alkali fusion, then oxidized by H2O2 in acidic solution, thus we can determine the iodine content by extraction spectrophotometry, which is about 426.
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