Laver has a black plastic bag? February science bang rumours-rumor, gossip, rumor, science gossip-IT information
Seaweed mixed with black plastic bags, cooking method does not match "arsenic" ... ... This sounds a bit scary, the network "thumb legend" tips work? Yesterday, by the Beijing Association for science and technology, the China evening news science editor, journalist Institute, Shanghai Institute of science and technology jointly issued the "rumor list February science" tells the truth.
In pictures: "February science rumor list" rumor seaweed mixed with black plastic bags in source: network
Laver has a black plastic bag?
"Gossip" online video went viral a "chew it rotten" Laver. "Translucent" also has a "stench", is said to be made of black plastic bags of seaweed.
"The truth" single layer of seaweed itself is translucent, inherent to the stench of seafood flavor, but chew bad probably because seaweed is too "old". Through the bubble and set fire to two ways to easily identify real seaweed or a plastic bag. Laver will swell after absorbing water, plastic bags are not. Laver lit odorless or slight saltiness, plastic bags have a pungent chemical odor.
Beijing Municipal food safety monitoring and risk assessment in the laboratory of the Centre of 45 seaweed samples and 3 film specimens were identified. Results showed that is not currently found in the plastic film the phenomenon of counterfeiting.
Bath cancer confined space?
"Gossip" note! This bath should be carcinogenic in two ways. Recently, a "popular science" are very popular: "chloroform is the new shape of the water ecological killer, bathing in a confined space for a long time, through the breath and skin more volume of chloroform inhalation. Study says per million people, with 12 people cancer! "
"The truth" chlorine is the most commonly used water treatment plant and sterilization technology. Professional Committee of the Zhejiang Provincial Association of cancer tumors in Secretaries, Deputy Director of Department of Zhejiang Provincial tongde hospital intervention Mao Yingmin said: "regardless of the concentration of chlorine in tap water when she was bathing after evaporation of high temperature chlorine concentration, are fairly low, and does not constitute a danger to the human body. ”
The national drinking water standard for chlorine in tap water has very strict standards. Tap water at the factory have been rigorously tested in the concentration range of the national requirements will not cause harm to the human body, formal qualified water treatment plant water is healthy, therefore, we do not need to be too sensitive.
Cooking the right way to eat "arsenic"?
"Gossip" an article entitled ' the most commonly used methods of cooking rice, so you eat most of the suggested arsenic, Cook rice in water overnight, pour away the water the next day, plus boiled rice, of arsenic in rice residue to be drastically reduced. Because, according to British media reports, a study on rice and rice products in Northern Ireland Scholar Professor Andi·mahaerge has done experiments, popular method for cooking rice, arsenic (commonly known as arsenic) residue in the rice.
"The truth" cannot be exactly the same as the arsenic arsenic. College of biosystem engineering and food science, Zhejiang University Food Science Professor Shen l r said food safety standards in China has strict rules on arsenic, in line with standard rice almost no effect on human health, we do not need to talk about arsenic discoloration.
Shen l r said: "first, Ministry of agriculture in around are has agricultural risk assessment Center, through national food security standard of rice, arsenic content very low; second, on arsenic content of control main by environment control and quality detection, like avoid industrial sewage irrigation farmland, strengthening soil, and water, and rice of risk detection, by Cook rice of environment or conditions to solution role is unlikely to; Furthermore, excessive soaking rice will caused nutrition of loss. Usually wash rice, changing the water several times on the trip, rice soak for more than half an hour. ”
A normal oxygen health care?
"Gossip" oxygen plants manufacturer to sell products, publicity, a normal oxygen can care. This credible?
"The truth" the State food and Drug Administration issued a oxygen consumer tips to remind consumers there is no evidence that oxygen has health effects on normal, oxygen to be used under medical supervision in accordance with the prescriptions of daily time and velocity to use, thereby reducing the risks of improper indication, improper oxygen may cause harm to the human body. Consumers should purchase and use of oxygen under the guidance of a doctor. When buying, you should select the unit to a qualified purchase, carefully check the registration number of the product and manufacturer information, and pay attention to request an invoice and receipt, check the content and keep it. Consumers can log on to the State food and Drug Administration Web site (www.CFDA.gov.CN) "data search" section to verify product information.
Eating birds have avian influenza?
"Gossip" imported H7N9 cases are sporadic, and regarding avian influenza is back in time: "eat poultry avian influenza" and "wear a down jacket will get the bird flu" ... ...
"The truth" led H7N9 viruses that infect humans the most important risk factors are directly or indirectly exposed to infected live birds or infected poultry pollution of the environment. There is no evidence that H7N9 virus through properly after handling poultry or eggs to humans. In addition, eating cooked foods will not H7N9 virus infection.
Employed on a large scale and standardization of the non-poultry, trafficking, killing and other working people more opportunities to due to exposure to infected poultry, so the risk of infection is high. But fill down jacket down products usually used after disinfection, high temperature and many other areas, little possibility of survival of avian influenza virus. Therefore, workers collect down are indeed avian high-risk should take appropriate protective measures, but has little chance of infection down jacket.
H7N9 avian flu is not a seasonal flu, is not widely distributed in the crowd, only vaccine for seasonal flu, there are no H7N9 avian flu vaccine. As long as the public protection, without contact with live birds, live poultry markets and contagion risk is very low.
紫菜里有黑色塑料袋？2月科学流言榜辟谣 - 辟谣,谣言,科学流言 - IT资讯
紫菜里掺有黑色塑料袋，煮饭方法不对赛“砒霜”……这些听上去有点骇人，网络上“拇指相传”的小贴士靠谱吗？昨天，由北京市科协、中国晚报科学编辑记者学会、上海科技传播学会等共同发布的“2月科学流言榜”道出了其中的真相。
图说：“2月科学流言榜”辟谣紫菜里掺有黑色塑料袋来源：网络
紫菜里有黑色塑料袋？
【流言】网上视频疯传一种“嚼不烂”紫菜。它“半透明”，还有一股“腥臭味”，据说是用黑色塑料袋制作的假紫菜。
【真相】单层的紫菜本身就是半透明，腥臭味也是海产品固有的味道，而嚼不烂有可能是因为紫菜太“老”了。通过泡发和火烧两种方式可以轻易分辨是真紫菜还是塑料袋。真紫菜吸水后会胀大，塑料袋则不会。真紫菜点燃后无味或有淡淡咸味，塑料袋则有刺鼻化学气味。
北京市食品安全监控和风险评估中心在实验室对45个紫菜样品和3个塑料薄膜样品进行了鉴别。结果显示，目前未发现样本中存在塑料薄膜制假的现象。
密闭空间洗澡易致癌？
【流言】注意！这两种方式洗澡居然会致癌。近期，一篇生活“科普文”很流行：“自来水产生的氯仿是新形态生态杀手，在密闭空间中洗澡愈久，经由呼吸和皮肤吸入的氯仿量愈多。有研究称，每百万人会有12人因此致癌!”
【真相】氯消毒是目前自来水厂最常用的灭菌技术。浙江省抗癌协会肿瘤介入专业委员会秘书、浙江省立同德医院介入科副主任医师毛颖民表示：“无论自来水中的氯气浓度还是洗澡时高温蒸发后的氯气浓度，都是相当低的，对人体不构成危害。”
《国家生活饮用水卫生标准》对于自来水中氯浓度有着严格的标准。自来水在出厂时都经过了严格的检验，在国家要求的浓度范围内不会对人体造成危害，正规合格自来水厂出来的生活用水都是健康的，因此市民不需要过于敏感。
煮饭方法不对吃“砒霜”？
【流言】一篇题为《中国人最常用的煮米饭方法，让你吃进了最多的砒霜》的文章建议，煮饭时将大米用水浸隔夜，第二天把水倒掉，再加水煮饭，这样大米中的砷残留物会大大减少。因为，据英国媒体报道，一位研究大米和大米产品的北爱尔兰学者安迪·马哈尔格教授曾做实验，人们惯常煮大米的方法，会令砷（俗称砒霜）残留在米饭里。
【真相】不能把砷完全等同于砒霜。浙江大学生物系统工程与食品科学学院食品科学专业教授沈立荣表示，中国食品安全标准中对砷含量有着严格的规定，符合标准的大米对人体健康几乎无影响，大家无需谈砷色变。
沈立荣说：“首先，农业部在各地都有农产品风险评估中心，通过国家食品安全标准的大米，砷含量极低；其次，对砷含量的控制主要靠环境控制和质量检测，比如避免工业污水灌溉农田，加强土质、水质、稻米的风险检测，靠煮饭的环境或条件来解决作用不大；再者，过度浸泡大米会造成营养的流失。平常洗米、换水几次就行，大米浸泡别超过半个小时。”
正常人多吸氧可保健？
【流言】不少制氧机厂商为了推销产品，对外宣传称，正常人多吸氧也能保健。这可信吗？
【真相】国家食药监管总局发出制氧机消费提示，提醒消费者目前尚无证据证明吸氧对正常人具有保健作用，制氧机要在医生指导下按照处方每日使用的时间和流速来使用，从而降低适应症选择不当带来的风险，不适当的吸氧可能会对人体造成伤害。消费者应在医生指导下购买和使用制氧机。购买时，应选择到有资质的单位购买，仔细查看产品的注册号及生产企业相关信息，并要注意索要发票和购物凭证，核对内容并妥善保存。消费者可登录国家食品药品监督管理总局网站（www.cfda.gov.cn）“数据查询”栏目核实产品有关信息。
吃禽类会得禽流感？
【流言】输入性H7N9病例又零星现身，一时间各种关于禽流感的说法又卷土重来：“吃禽类会得禽流感”“穿羽绒服会得禽流感”……
【真相】导致人感染H7N9病毒最重要的危险因素，是直接或间接暴露于受感染活禽或带毒禽类污染的环境中。尚没有证据显示H7N9病毒能够通过经妥善处理后的禽类或禽蛋类传播给人类。此外，吃煮熟的食物也不会感染H7N9病毒。
从事非规模化和非规范化家禽养殖、贩卖、宰杀等工作的人群，因接触于带毒禽类的机会较多，所以被感染的风险也高。但填充羽绒服使用的羽绒制品通常经过消毒、高温等多个环节处理，禽流感病毒存活的可能性微乎其微。因此，收集羽绒的工人确实是感染禽流感的高危人群，应采取相应的防护措施，但穿羽绒服感染禽流感的几率很小。
H7N9禽流感并非季节性流感，在人群中分布也不算广泛，目前只有预防季节性流感的疫苗，尚没有H7N9禽流感疫苗。只要市民注意防护，不接触活禽、不去活禽交易市场，传染风险并不大。