Objective: Heighten swimming pool water of urea testing quality, so diacetyl monoxime acetyl better to apply.

目的：提高游泳池水中尿素的檢測質(zhì)量，使二乙酰一肟法得到更好的應(yīng)用玖玖玖玖色在线观看播放。

Methods: The original method diacetyl monoxime solution concentration of 2 g/L to switch to 10 g/L solids volume direct add to antipyrine dissolved of solution;DMA plus 10 ml water 2 ml 1 h after boiling liquid cooling, Pure water volume to 25 ml determination.

將原法二乙酰一肟溶液濃度2 g/L改為10 g/L的固體量直接加到安替比林溶液中溶解亚洲欧美中文日韩激情；水樣10 ml加DMA2 ml沸浴1 h后冷卻，純水定容至25 ml測定αⅴ插插。

Methods On the conditions of strong acid and calefaction,urea can react on antipyrine and diacetyl monoxime and become yellow which can be determined by colorimetric analysis in 450 nm with the ALLIANCE FUTURA continuous flow injection auto analysis system.

方法根據(jù)尿素在強(qiáng)酸和加熱條件下與安替比林及二乙酰一肟反應(yīng)呈黃色日本美女免费黄色网站，在450nm比色定量的原理，選用FUTURA流動注射分析儀對游泳池水中的尿素進(jìn)行測定夜晚av网站，進(jìn)行余氯干擾試驗国产下药迷在线视频，并將該方法與二乙酰一肟安替比林法進(jìn)行比較。

Based on the absorption property of glyoxime which can be formed by addition reaction of aldehyde group and hydroxylamine in the UV-spectral region,spectrophotometric determination of glyoxal in glyoxal solution was proposed.

利用醛基與羥胺在酸性條件下的成肟反應(yīng)產(chǎn)物乙二醛二肟對紫外光的吸收特性不卡免费黄色小视频，用紫外分光光度法測定乙二醛的含量男女八x八x视频网站。

Mainfactors are as follows: standard solution、 regressive curve无码AV一区二区大桥久未、 parallel experiment of sample看黄免费看、 diacetyl monxime's reagent colorimetic method、 spectrophotometer可以的黄色网站有哪些、 sampling , etc .

影響測定結(jié)果的分量主要有：標(biāo)準(zhǔn)溶液欧美日韩综合自拍小说网站、回歸曲線、樣品平行試驗加勒比在线视频一区、二乙酰一肟分光光度法黄免费视频色、分光光度計、取樣等黄页网站在线观看视频在线。

Study on an efficient process for the preparation of trifloxystrobin starting from 2-methylacetophenone bypartial oxidation,esterification,reaction with methoxyamine,bromization and condensation with 3'- acetophenone oxime.

以鄰甲基苯乙酮為原料美女视频网站一区，經(jīng)過高錳酸鉀的堿性氧化久久精品国产日本VA，甲醇酯化，再與甲氧基胺鹽酸鹽肟化后18禁毛片免费无遮挡无风险，用N-溴丁二酰亞胺溴化，最后和間三氟甲基苯乙酮肟縮合得到目標(biāo)產(chǎn)物肟菌酯能看av得网站。

Ethoxycarbonyl-4,5-dimethyl-pyrrole (7) was prepared from ethylacetoacetate, ethyl formate and methyl ethyl ketone via oximination, Claisen condensation, and reductive condensation. The bromization of compound 7 gave 2-ethoxycarbonyl-3-bromo-4,5-dimethyl-pyrrole(8), which could be transferred to 2-ethoxy-carbonyl-3-brome-4-methyl-5-formyl-pyrrole (9) by the formolation.

由乙酰乙酸乙酯射一次视频网站、甲酸乙酯及丁酮等原料經(jīng)過肟化、Claisen縮合国产a片区真实,乱伦、還原縮合成環(huán)得到2-乙氧羰基－4久久精品青草社区免费，5-二甲基－吡咯(7)，溴化生成2-乙氧羰基－3-溴4免费污色网站，5-二甲基－吡咯(8)人人干人人肏，最后經(jīng)過甲酰化反應(yīng)得到目標(biāo)產(chǎn)物2-乙氧羰基－3-溴－4-甲基－5-甲跹侵抟患抖叮基－吡咯(9)91中文字幕永久。

Firstly, 3-ethylthiobutanal was prepared from crotonaldehyde reacting with ethanehiol in triethylamine with high yield. Secondly, methyl acetoacetate was converted to 6-ethylthiohept-3-en-2-one by three steps via hydrolysis, condensation with 3-ethyltio-butanal and dehydration, then 6-ethylthiohept-3-en-2-one was cycloco ndensed with dimethyl malonate by Michael addition and Claisen condensation, followed by saponification and decarboxylation to give the intermediate of 5-(2-ethylthiopropyl)-cyclohexane-1,3-dione.

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These products include sodium percarbonate, percarbamide, 4Na 2SO 4·2H 2O 2·NaCl adduct, tertiary amine oxides, hydrazine hydrate, dihydroxy benzene, quaternary ammonium salt hydrogen peroxide and methylethyl ketone oxime.

介紹了近期國外過氧化氫在部分化學(xué)品合成中應(yīng)用研究新進(jìn)展乱伦激情熟女网，產(chǎn)品包括過碳酸鈉、過碳酰胺岛国性爱视频在线、4Na2 SO4·2H2 O2 ·NaCl加合物欧美18XXOO视频在线喷水、叔胺氧化物、水合肼日本免费的黄色网站、二羥基苯免费体验观看无码A片120秒、季銨鹽過氧化氫和甲乙酮肟。

Inorganic chemistry ; hydrogen peroxide ; review ; sodium percarbonate ; percarbamide ; 4Na 2SO 4·2H 2O 2·NaCl adduct ; tertiary amine oxides ; hydrazine hydrate ; dihydroxy benzene ; quaternary ammonium salts hydrogen peroxide ; methylethyl ketone oxim

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benzhydroxamic acid：苯氧肟酸

benzethonium chloride 芐索氯銨,氯化芐乙氧銨 | benzhydroxamic acid 苯氧肟酸 | benzhydryl bromide 二苯甲基溴

bisdimethylarsenic oxide; cacodyl oxide：氧化四甲胂;氧化雙(二甲胂)

甜沒藥[萜]醇 bisabolol | 氧化四甲胂;氧化雙(二甲胂) bisdimethylarsenic oxide; cacodyl oxide | 二氯雙(二甲基乙二肟)鈷 bisdimethylglyoxime cobaltochloride

glyoxal; oxaldehyde：乙二醛

乙二醛二肟 glyoxal dioxime; glyoxime | 乙二醛 glyoxal; oxaldehyde | 羥乙酸 glyoxalic acid hydrate

glyoxime：乙二肟

glyoxaline 咪唑 | glyoxime 乙二肟 | glyoxylate cycle 乙醛酸循環(huán)

glyoxal dioxime; glyoxime：乙二醛二肟

甘草酸苷 glycyrrhizin; glycyrrhizic acid | 乙二醛二肟 glyoxal dioxime; glyoxime | 乙二醛 glyoxal; oxaldehyde

glyoxyl：乙醛酰

glyoxime 乙二肟 | glyoxyl 乙醛酰 | glyoxylase 乙二醛酶

methylfumaric acid; mesaconic acid：甲基反丁烯二酸;中康酸

甲基乙基硝胺 methylethylnitramine | 甲基反丁烯二酸;中康酸 methylfumaric acid; mesaconic acid | 甲基乙酮醛二肟;丙酮醛二肟 methylglyoxime; pyruvic aldehyde dioxime

ACETYL METHYL CARBINOL：乙醯基甲基甲醇

,\\"乙醛肟\\",\\"Acetaldehyde oxime\\" | ,\\"乙醯基甲基甲醇\\",\\"Acetyl methyl carbinol\\" | ,\\"丙烯醛二聚物\\",\\"Acrolein dimer\\"