久久亚洲国产成人影院-久久亚洲国产的中文-久久亚洲国产高清-久久亚洲国产精品-亚洲图片偷拍自拍-亚洲图色视频

Global EditionASIA 中文雙語Fran?ais
Lifestyle
Home / Lifestyle / News

Arsenic and old nails

By Zhang Zefeng | China Daily | Updated: 2018-02-07 09:01
Share
Share - WeChat
Former RISE president Kate Smith and Taiyuan University of Technology student Li Zhilin check water samples taken from Liangjiabu village in North China's Shanxi province. [Photo provided to China Daily]

Students from the Rural International Student Exchange program at Tsinghua University are helping villagers in Shanxi province purify drinking water. Zhang Zefeng reports.

Even in his childhood, Liang Honggang had the impression the water quality in his village was poor. However, he didn't fully realize how bad it was until he attended high school in the nearby city of Pingyao and had access to tap water.

"The water just tastes different," says Liang, now a 23-year-old graduate of Taiyuan University of Technology. "Back home, the water is smelly, especially during summer."

This is not that surprising since the water in the small village of Liangjiabu in Shanxi province is primarily untreated groundwater from two wells.

But aside from having the odor and sediment, the water is also contaminated with arsenic.

Last summer a team of 13 students from Rural International Student Exchange at Tsinghua University, a nonprofit organization dedicated to solving rural environmental problems in China, visited the village and tested the water.

According to the test result of the RISE team, the main well in Liangjiabu had an arsenic concentration of over 200 micrograms per liter, far exceeding the World Health Organization safety standard of 10 micrograms per liter.

Cao Yining, a 21-year-old environmental engineering major of Tsinghua University, is the current team leader. While visiting the village, she was astounded by the quality of local drinking water.

"I feel powerless as there is little we can do," she said.

The arsenic is the result of the local geological conditions, the Taiyuan and Datong basins in Shanxi have arsenic, and the area also has the natural conditions for arsenic to enter the groundwater.

Among the regions and provinces in China, 20 have water naturally contaminated with arsenic. Apart from Shanxi, certain areas among regions including the Xinjiang Uygur autonomous region, the Ningxia Hui autonomous region and Jilin province suffer from severe contamination, says Zhang Fang, assistant professor, School of Environment, Tsinghua University.

The greatest threat to public health from arsenic originates from contaminated groundwater. Long-term exposure to arsenic through drinking-water and food can lead to skin cancer, skin lesions, cardiovascular disease and diabetes, according to WHO.

1 2 3 Next   >>|
Most Popular
Top
BACK TO THE TOP
English
Copyright 1995 - . All rights reserved. The content (including but not limited to text, photo, multimedia information, etc) published in this site belongs to China Daily Information Co (CDIC). Without written authorization from CDIC, such content shall not be republished or used in any form. Note: Browsers with 1024*768 or higher resolution are suggested for this site.
License for publishing multimedia online 0108263

Registration Number: 130349
FOLLOW US
 
主站蜘蛛池模板: 久草视频资源在线观看 | 免费观看女人一摸全是水 | 韩国毛片免费看 | 国产成人aa在线视频 | 亚洲成在线观看 | 天堂mv亚洲mv在线播放9蜜 | 欧美激情视频在线观看一区二区三区 | 国产综合成人亚洲区 | 性欧美美国级毛片 | 欧美一级aa天码毛片 | 亚洲免费在线视频 | 视频二区在线观看 | 手机看片日韩日韩国产在线看 | 久久精品久久精品久久精品 | 国产午夜免费福利红片 | 久久精品一区二区免费看 | a一级毛片录像带 录像片 | 久草资源在线播放 | 亚洲成人视 | 97久久曰曰久久久 | 亚洲国产99在线精品一区二区 | 久久精品亚洲 | 国产亚洲欧美另类久久久 | 成 人 黄 色 大 片 | 深夜爽爽爽福利动态图 | 最近中文字幕精彩视频 | 欧美7777| 99久久综合精品免费 | 久久99久久99精品观看 | 国产成人偷拍 | 日韩视频在线观看一区二区 | 自拍视频在线观看视频精品 | 曰本人做爰大片免费观看一 | 国产99视频精品免费视频免里 | 欧美一级www| 黄色a∨| 亚洲自偷自偷图片在线高清 | 久草手机视频在线 | 一级女人毛片 | 国产欧美日韩在线观看 | 欧美一级看片 |