www射-国产免费一级-欧美福利-亚洲成人福利-成人一区在线观看-亚州成人

US EUROPE AFRICA ASIA 中文
China / Society

Questions about sodium cyanide

(chinadaily.com.cn) Updated: 2015-08-18 17:22

Questions about sodium cyanide

Journalists prepare to take pictures and conduct interviews near the scene of the blasts at Tianjin Port on Monday. Zhu Xingxin / China Daily

More than 40 kinds of hazardous chemicals have been confirmed as being present near the blast site in Tianjin, including potassium nitrate, ammonium nitrate and sodium cyanide, Niu Yueguang, deputy chief of the fire department of the Ministry of Public Security said on Monday.

There are about 800 tons of ammonium nitrate and 500 tons of potassium nitrate on the site which, together with more than 700 tons of sodium cyanide, meaning the overall amount of hazardous chemicals will exceed 2,000 tons.

Both ammonium nitrate and potassium nitrate are hazardous and flammable, and are explosive oxidizers rather than toxic persistent compounds.

Sodium cyanide however is the exception.

Fatal if inhaled, sodium cyanide is commonly used in the mining industry to extract gold from ore - a gold leaching agent that "could largely lower the cost of the extraction process", Chen Jinghe, CEO of Zijin Mining told China Business News.

It is possible there is a residue from the chemicals in residential buildings near the blast site which could be dangerous, said Bao Jingling, chief engineer of Tianjin's bureau of environmental protection on Tuesday.

He also warned the public not to touch any residues and especially not try to mix them with water.

Here are some quick Q & As about sodium cyanide

1. What is sodium cyanide?

It appears as a white crystal or powder. Sodium cyanide is a systemic agent which releases hydrogen cyanide gas, a highly toxic chemical compound that affects the body's ability to use oxygen.

2. Why is sodium cyanide dangerous?

Seven drops of sodium cyanide could be lethal for a 70 kg person. Sodium cyanide will release highly toxic hydrogen cyanide gas when in contact with water or acid. It can lead to asphyxiation.

3. How can sodium cyanide spread?

It can be released into the air with the help of wind as fine droplets. According to the US Centers for Disease Control and Prevention, downstream danger could spread up to 5 km away.

Sodium cyanide can also contaminate water, which cannot be easily purified by traditional methods such as carbon. Bottled water or using reverse osmosis systems are preferable for people when using water.

Sodium cyanide can contaminate agricultural products and food.

4. What are the symptoms if exposed?

Inhalation: headaches, vomiting, convulsions, irregular heartbeat or death.

Ingestion: burning sensation, nausea, diarrhea, vomiting.

Eye contact: irritation, burning sensation

Skin contact: burns, ulcers, same symptoms as inhalation

5. Will a mask help?

Popular masks such as N95 produced by 3M are used to protect against particulates rather than chemicals. Carbon-based filters are effective in sufficient amounts. According to monitored data, local authorities confirmed that the air quality around the site was normal.

6. What should you do?

Limit outdoor exposure for the next two weeks if within the affected zone. Stay indoors and keep windows and doors closed.

If you must go out, wear a mask containing carbon.

Wash clothing and items that may have been exposed to chemical residue spread by wind or rain.

Cyanide gas does most harm to people if inhaled. You must go to an open area to get fresh air and a supply of oxygen if needed.

Seek medical help for severe cases of inhalation and avoid mouth-to-mouth resuscitation to an affected person as it could be hazardous.

Dispose of contaminated clothing or items.

Rinse eyes with water for 15 minutes and wash irritated skin and cover with anti-bacterial cream.

Wash and peel all fruits and vegetables which could be contaminated before eating.

7. What are the long-term health effects of cyanide exposure?

Heart, brain and nerve damage.

Highlights
Hot Topics
...
主站蜘蛛池模板: 国产成人咱精品视频免费网站 | 一区二区三区免费视频 www | 午夜黄色毛片 | 亚洲视频男人的天堂 | 国产成人精品久久二区二区 | 亚洲欧美精品成人久久91 | 女人张开腿让男人操 | 成人在线视频免费观看 | 黄色网址在线免费看 | 久久精品国产99精品最新 | 99精品国产综合久久久久 | 国产精品不卡 | 亚洲色在线视频 | 国产精品亚洲一区二区三区久久 | 国产免费专区 | 欧美色综合高清视频在线 | 狠狠色狠狠综合久久 | 一区二区三区四区免费视频 | 久香草视频在线观看 | 亚洲成人免费视频在线 | 欧美在线观看视频一区 | 久久精品香蕉 | 美女一级毛片免费观看 | 97在线碰碰观看免费高清 | 欧美极度另类 | 免费三级网站 | 欧美一级一极性活片免费观看 | 香蕉久久一区二区不卡无毒影院 | 精品少妇一区二区三区视频 | 手机看片久久高清国产日韩 | 国产精品特黄一级国产大片 | 国产在线观看成人免费视频 | 国产手机免费视频 | 亚洲第一页在线 | 欧美一区二区视频 | 国产亚洲精品午夜高清影院 | 国内精品久久久久久久久久影视 | 在线看国产 | 国内精品久久久久影院免费 | 国产精品男人的天堂 | 免费a网址 |