
常用试液配制1
一氯化碘试液 取碘化钾0.14g与碘酸钾90mg,加水125ml使溶解,再加盐酸125ml,即得。本液应置玻璃瓶内,密闭,在凉处保存。
N-乙酰-L-酪氨酸乙酯试液 取N-乙酰-L-酪氨酸乙酯24.0mg,加乙醇0.2ml使溶解,加磷酸盐缓冲液(取0.067mol/L磷酸二氢钾溶液38.9ml与0.067mol/L磷酸氢二钠溶液61.6ml,混合,pH值为7.0)2ml,加指示液(取等量的0.1%甲基红的乙醇溶液与 0.05%亚甲蓝的乙醇溶液,混匀)1ml,用水稀释至10ml,即得。
乙醇制对二甲氨基苯甲醛试液 取对二甲氨基苯甲醛1g,加乙醇9.0ml与盐酸2.3ml使溶解,再加乙醇至100ml,即得。
乙醇制氢氧化钾试液 可取用乙醇制氢氧化钾滴定液(0.5mol/L)。
乙醇制氨试液 取无水乙醇,加浓氨溶液使每100ml中含NH3 9~11g,即得。 本液应置橡皮塞瓶中保存。
乙醇制硝酸银试液 取硝酸银4g,加水10ml溶解后,加乙醇使成100ml,即得。 乙醇制溴化汞试液 取溴化汞2.5g,加乙醇50ml,微热使溶解,即得。 本液应置玻璃塞瓶内,在暗处保存。
二乙基二硫代氨基甲酸钠试液 取二乙基二硫代氨基甲酸钠0.1g,加水100ml溶解 后,滤过,即得。
二乙基二硫代氨基甲酸银试液 取二乙基二硫代氨基甲酸银0.25g,加氯仿适量与三乙胺1.8ml,加氯仿至100ml,搅拌使溶解,放置过夜,用脱脂棉滤过,即得。本液应置棕色玻璃瓶中,密塞,置阴凉处保存。
二苯胺试液 取二苯胺1g,加硫酸100ml使溶解,即得。
二氨基萘试液 取2,3-二氨基萘0.1g与盐酸羟胺0.5g,加0.1mol/L盐酸溶液100ml,必要时加热使溶解,放冷滤过,即得。本液应临用新配,避光保存。
二硝基苯试液 取间二硝基苯2g,加乙醇使溶解成100ml,即得。
二硝基苯甲酸试液 取3,5-二硝基苯甲酸1g,加乙醇使溶解成100ml,即得。
二硝基苯肼试液 取2,4-二硝基苯肼1.5g,加硫酸溶液(1→2)20ml,溶解后,加水使成100ml,滤过,即得。
稀二硝基苯肼试液 取2,4-二硝基苯肼0.15g,加含硫酸0.15ml的无醛乙醇100ml使溶解,即得。
二氯化汞试液 取二氯化汞6.5g,加水使溶解成100ml,即得。
二氯靛酚钠试液 取2,6-二氯靛酚钠0.1g,加水100ml溶解后,滤过,即得。
丁二酮肟试液 取丁二酮肟1g,加乙醇100ml使溶解,即得。
三硝基苯酚试液 本液为三硝基苯酚的饱和水溶液。
三硝基苯酚锂试液 取碳酸锂0.25g与三硝基苯酚0.5g,加沸水80ml使溶解,放冷,加水使成100ml,即得。 三氯化铁试液 取三氯化铁9g,加水使溶解成100ml,即得。
三氯醋酸试液 取三氯醋酸6g,加氯仿25ml溶解后,加30%过氧化氢溶液0.5ml,摇匀,即得。
五氧化二钒试液 取五氧化二钒适量,加磷酸激烈振摇2小时后得其饱和溶液,用垂熔玻璃漏斗滤过,取滤液1份加水3份,混匀,即得。
水合氯醛试液 取水合氯醛50g,加水15ml与甘油10ml使溶解,即得。
水杨酸铁试液 (1) 取硫酸铁铵0.1g,加稀硫酸2ml与水适量使成100ml。 (2) 取水杨酸钠1.15g,加水使溶解成100ml。 (3) 取醋酸钠13.6g,加水使溶解成100ml。 (4) 取上述硫酸铁铵溶液1ml,水杨酸钠溶液0.5ml,醋酸钠溶液0.8ml与稀醋酸0.2ml,临用前混合,加水使成5ml,摇匀,即得。
甘油醋酸试液 取甘油、50%醋酸与水各1份,混合,即得。 甲醛试液 可取用“甲醛溶液”。 甲醛硫酸试液 取硫酸1ml,滴加甲醛试液1滴,摇匀,即得。 本液应临用新制。
对二甲氨基苯甲醛试液 取对二甲氨基苯甲醛0.125g,加无氮硫酸65ml与水35ml的冷混合液溶解后,加三氯化铁试液0.05ml,摇匀,即得。 本液配制后7日即不适用。
对甲苯磺酰-L-精氨酸甲酯盐酸盐试液 取对甲苯磺酰-L-精氨酸甲酯盐酸盐98.5mg,加三羟甲基氨基甲烷缓冲液(pH8.1)5ml使溶解,加指示液(取等量0.1%甲基红的乙醇溶液与0.05%亚甲蓝的乙醇溶液,混匀)0.25ml,用水稀释至25ml。
对氨基苯磺酸-α-萘胺试液 取无水对氨基苯磺酸0.5g,加醋酸150ml溶解后,另取盐酸-α-萘胺0.1g,加醋酸150ml使溶解,将两液混合,即得。 本液久置显粉红色,用时可加锌粉脱色。
对羟基联苯试液 取对羟基联苯1.5g,加5%氢氧化钠溶液10ml与水少量溶解后,再加水稀释至100ml。本液贮存于棕色瓶中,可保存数月。
亚铁氰化钾试液 取亚铁氰化钾1g,加水10ml使溶解,即得。 本液应临用新制。
亚硫酸氢钠试液 取亚硫酸氢钠10g,加水使溶解成30ml,即得。 本液应临用新制。 亚硫酸钠试液 取无水亚硫酸钠20g,加水100ml使溶解,即得。 本液应临用新制。
亚硝基铁氰化钠试液 取亚硝基铁氰化钠1g,加水使溶解成20ml,即得。 本液应临用新制。
亚硝基铁氰化钠乙醛试液 取1%亚硝基铁氰化钠溶液10ml,加乙醛1ml,混匀,即得。 亚硝酸钠试液 取亚硝酸钠1g,加水使溶解成100ml,即得。
亚硝酸钴钠试液 取亚硝酸钴钠10g,加水使溶解成50ml,滤过,即得。 血红蛋白试验 取牛血红蛋白1g,加盐酸溶液(取1mol/L盐酸溶液65ml,加水至1000ml)使溶解成100ml,即得。本液置冰箱中保存,2日内使用。
过氧化氢试液 取浓过氧化氢溶液(30%),加水稀释成3%的溶液,即得。
次氯酸钠试液 取含氯石灰20g,缓缓加水100ml,研磨成均匀的混悬液后,加14%碳酸钠溶液100ml,随加随搅拌,用湿滤纸滤过,分取滤液5ml,加碳酸钠试液数滴,如显浑浊,再加适量的碳酸钠溶液使石灰完全沉淀,滤过,即得。含NaClO应不少于4%。 本液应置棕色瓶内,在暗处保存。
次溴酸钠试液 取氢氧化钠20g,加水75ml溶解后,加溴5ml,再加水稀释至100ml,即得。 本液应临用新制。
异烟肼试液 取异烟肼0.25g,加盐酸0.31ml,加甲醇或无水乙醇使溶解成500ml,即得。
多硫化铵试液 取硫化铵试液,加硫黄使饱和,即得。
邻苯二醛试液 取邻苯二醛1.0g,加甲醇5ml与0.4mol/L硼酸溶液(用45%氢氧化钠溶液调节pH值至10.4)95ml,振摇使邻苯二醛溶解,加硫乙醇酸2ml,用45%氢氧化钠溶液调节pH值至10.4。
含碘酒石酸铜试液 取硫酸铜7.5g、酒石酸钾钠25g、无水碳酸钠25g、碳酸氢钠20g与碘化钾5g,依次溶于800ml水中;另取碘酸钾0.535g,加水适量溶解后,缓缓加入上述溶液中,再加水使成1000ml,即得。
间苯二酚试液 取间苯二酚1g,加盐酸使溶解成100ml,即得。 间苯三酚试液 取间苯三酚0.5g,加乙醇使溶解成25ml,即得。 本液应置玻璃塞瓶内,在暗处保存。
苯酚二磺酸试液 取新蒸馏的苯酚3g,加硫酸20ml,置水浴上加热6小时,趁其尚未凝固时倾入玻璃塞瓶内,即得。用时可置水浴上微热使融化。
茚三酮试液 取茚三酮2g,加乙醇使溶解成100ml,即得。
{占}吨氢醇甲醇试液 可取用85%{占}吨氢醇的甲醇溶液。 钒酸铵试液 取钒酸铵0.25g,加水使溶解成100ml,即得。
变色酸试液 取变色酸钠50mg,加硫酸与水的冷混合液(9:4)100ml使溶解,即得。 本液应临用新制。
茜素氟蓝试液 取茜素氟蓝0.19g,加氢氧化钠溶液(1.2→100)12.5ml,加水800ml与醋酸钠结晶0.25g,用稀盐酸调节pH值约为5.4,用水稀释至1000ml,摇匀,即得。
茜素锆试液 取硝酸锆5mg,加水5ml与盐酸1ml;另取茜素磺酸钠1mg,加水5ml,将两液混合,即得。
草酸试液 取草酸6.3g,加水使溶解成100ml,即得。 草酸铵试液 取草酸铵3.5g,加水使溶解成100ml,即得。
枸橼酸醋酐试液 取枸橼酸2g,加醋酐100ml使溶解,即得。 品红亚硫酸试液 取碱式品红0.2g,加热水100ml溶解后,放冷,加亚硫酸钠溶液 (1→10)20ml、盐酸2ml,用水稀释至200ml,加活性炭0.1g,搅拌并迅速滤过,放置1小时以上,即得。 本液应临用新制。
品红焦性没食子酸试液 取碱式品红0.1g,加新沸的热水50ml溶解后,冷却,加亚硫酸氢钠的饱和溶液2ml,放置3小时后,加盐酸0.9ml,放置过夜,加焦性没食子酸0.1g,振摇使溶解,加水稀释至100ml,即得。
氢氧化四甲基铵试液 取10%氢氧化四甲基铵溶液1ml,加无水乙醇使成10ml,即得。 氢氧化钙试液 取氢氧化钙3g,置玻璃瓶内,加水1000ml,密塞,时时猛力振摇,放置1小时,即得。用时倾取上层的清液。
氢氧化钠试液 取氢氧化钠4.3g,加水使溶解成100ml,即得。
氢氧化钡试液 取氢氧化钡,加新沸过的冷水使成饱和的溶液,即得。 本液应临用新制。
氢氧化钾试液 取氢氧化钾6.5g,加水使溶解成100ml,即得。
氟化钠试液 取氟化钠0.5g,加0.1mol/L盐酸溶液使溶解成100ml,即得。 本液应临用新配。
香草醛试液 取香草醛0.1g,加盐酸10ml使溶解,即得。
重铬酸钾试液 取重铬酸钾7.5g,加水使溶解成100ml,即得。 重氮二硝基苯胺试液 取2,4-二硝基苯胺50mg,加盐酸1.5ml溶解后,加水1.5ml,置冰浴中冷却,滴加10%亚硝酸钠溶液5ml,随加随振摇,即得。
重氮对硝基苯胺试液 取对硝基苯胺0.4g,加稀盐酸20ml与水40ml使溶解,冷却至15℃,缓缓加入10%亚硝酸钠溶液,至取溶液1滴能使碘化钾淀粉试纸变为蓝色,即得。 本液应临用新制。
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京华网4月12日报道 “不要把罢工问题看得太敏感。”昨天下午,深圳市政协委员、市总工会副主席王同信在提交大会发言的书面材料中提出,罢工是市场经济摆脱不了的规律,也是目前社会能够接受的最好办法,深圳应当甩掉把罢工看得太敏感这个思想包袱。他同时提出,在法律或制度层面应当对罢工作出相应的规定。
罢工就好比夫妻打架
王同信说,现在人们都在谈工资增长问题,谁都知道,工资是劳动关系的核心问题。在西方国家,工资的增长靠劳资谈判谈不拢时,就会发生罢工,或者是企业关门,正是在这样反反复复的过程中,推动了工资的增长。
“现在人们对罢工太敏感,这是传统体制留下的思想包袱。”王同信说,劳资利益的分化和对立是必然的,劳资争议纯属经济问题,与政治、宗教、文化等并无关系,罢工是市场经济难以摆脱的规律,强势资本必然催生有组织的工人集体抗争,通过罢工来实现对资本的制约,“这恐怕是社会能够接受的最好办法。”
王同信说,只要是不出现大的破坏性行为,也不会对社会有太大的危害,罢工就好比夫妻打架,不应看得太敏感,深圳要思想解放就应该甩掉这个包袱。
越打击危险越大
“罢工是客观存在的,我们不能装着没有发生的样子。”王同信说,现在的情况是,对罢工问题,大小法律都是空白,没有依据,没有规范,带来的结果就是野猫式的罢工,没有游戏规则,罢工现场没有谈判,产生不了员工代表,没有谈判对手,要依靠政府和上级工会组织,费很大的劲,才能搞出一个协议?这种无序的状态造成的社会损失更大。“越打击危险越大。”王同信提出,对罢工应当在法律或者在制度上给个说法,作出相应规定,给罢工者一个宣泄的通道。
同时,王同信提出,企业也需要反思,引起罢工的主要原因是企业违法,工资十年五年不涨,过去那种在工资、劳动用工等方面由企业单方面说了算的局面恐怕很难继续下去了,企业只有认真履行工资集体协商的法律义务,权利义务对等,才能使企业健康发展。
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Antonio Hernandez plays "World of Warcraft." It’s the most popular online role-playing game in the world, with more than 10 million subscribers paying to create characters who go on quests, kill monsters and earn "virtual gold" in fantastical realms. The world - a direct descendant of J.R.R. Tolkien’s "Lord of the Rings" - even has its own carefully calibrated economy. But an outside force threatens the game’s integrity, Hernandez says. He has called on his fellow adventurers to join him as he takes a stand. The battle won’t be fought with wands or swords. http://www.veryge.com/
It will be waged in the Fort Lauderdale federal courthouse. The former assistant manager at an Orlando-area video game store is suing a company he says sells "virtual gold" from the "World of Warcraft" for real money. He wants IGE U.S. banned from selling gold - a practice commonly called "gold farming" or "real money trading" - because it hurts the game’s economy and ruins the entertainment experience, according to the lawsuit. Virtual gold, earned within the game, can be used for such things as buying and repairing equipment or learning new skills.
The case is thought to be the first of its kind - a lawsuit filed by a player seeking to ban "real money trading" within a virtual world. Hernandez wants a judge to certify the case as a class-action lawsuit, another potential first when it comes to lawsuits involving online role-playing games.
The legal fight is being closely watched by the fledgling field of "virtual law" and passionate "World of Warcraft" players.
"The real significance of this case is, ‘What are the rights of the (virtual world) community members when they go online?’" said C. Richard Newsome, Hernandez’s attorney.
Devout "World of Warcraft" players argue that people who buy gold are akin to baseball players who take steroids. Gold should be earned by each player by doing such things as completing quests and slaying monsters, not with a checkbook or credit card, they argue.
Attorneys for IGE U.S. have argued in court papers that Hernandez and other players have no standing to sue because they have no ownership or property rights within "World of Warcraft." Hernandez’s lawsuit fails to show how he suffered actual damages, according to legal filings by IGE U.S.
In addition, IGE U.S. is no longer involved in the virtual gold business, said Miami attorney James M. Miller, who is representing the company. He declined to elaborate further.
"The stakes are high and our intention is to address (the lawsuit) in court," Miller said.
In addition to the lawsuit, the Florida Attorney General’s Office has opened a consumer protection investigation into IGE U.S. The state sent a subpoena to the company in December, demanding documents detailing "the sale of World of Warcraft gold to consumers in the state of Florida." IGE U.S. is fighting the subpoena.
IGE U.S. had a Boca Raton office, but it is no longer open, according to the Attorney General’s Office.
Newsome argues that when players subscribe to "World of Warcraft," they are bound by an agreement that specifically states they "may not sell items for ‘real’ money or otherwise exchange items for value outside of the (virtual world)."
Gold farmers damage the game’s economy, making it harder for the typical subscribers, who pay $14.99 a month, to earn gold through regular play, Newsome said. That means they have to spend more time on the game gathering gold to compete, he argues.
"This loss of time, conservatively, amounts to hundreds of thousands of hours of subscriber time and causes the irreparable harm of driving subscribers away from World of Warcraft," according to Hernandez’s lawsuit. "The economic harm incurred by this loss of time is in the millions of dollars."
And many players can’t afford to buy gold, Newsome said. In at least one instance, the cost of buying 80,000 gold coins was $2,399.94.
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