当前位置:首页>南京>南京大学-李爱民团队-EP||饮用水惊现1,4-二氧六环全国性污染!工业废水成罪魁祸首,致癌风险超警戒线

南京大学-李爱民团队-EP||饮用水惊现1,4-二氧六环全国性污染!工业废水成罪魁祸首,致癌风险超警戒线

  • 2026-02-05 05:42:07
南京大学-李爱民团队-EP||饮用水惊现1,4-二氧六环全国性污染!工业废水成罪魁祸首,致癌风险超警戒线

导语:环境科学期刊Environmental Pollution(IF=7.3,JCR一区)近日发表一项题为“National-scale insights into occurrence, health risks, and potential sources of 1,4-dioxane in drinking water of China”的论文,揭示中国饮用水中1,4-二氧六环的全国分布格局与健康风险。

摘要:本研究针对中国31个省份101个城市的饮用水系统开展全国性调查,建立了灵敏度达5.38 ng/L的检测方法。结果显示1,4-二氧六环在饮用水中的检出率高达89.8%,浓度范围10.8-478.3 ng/L,其中4个样品超过美国饮用水健康建议限值(350 ng/L)。工业活动是主要污染源,工业区附近地下水浓度均值达1130.6 ng/L。污水处理厂对1,4-二氧六环的去除效率有限(-185.7%-83.2%),导致其在河流湖泊中累积。饮用水处理厂最大去除率仅36.6%,常规工艺难以有效管控风险。健康风险评估显示3.7%样品基准商数超过1,部分样品致癌风险值超过10-6,存在潜在健康风险。

亮点

  • 全国饮用水检出率高达89.8%

  • 工业区地下水污染超标准3倍

  • 水处理工艺去除率最高仅36.6%

  • 3.7%样品存在致癌风险超警戒

文中图片一览

图 1.(a)中国内地各地自来4-二氧六环的浓度。C 表示 1,4-二氧六环的浓度,而 MDL 表示方法检测限(5.38 纳克/升)。(b)各种变量对饮用水中 1,4-二氧六环的影响(< 0.05)。

图 2. (a)不同地区人群通过饮用消化 1,4-二氧六环的基准商数(BQ),(b)危害商数(HQ),以及(c)致癌风险(CR)。

图 3. (a)五个饮用水处理厂进水和出水中 1,4-二氧六环的浓度。(b)饮用水处理厂 3 的主要处理工艺。(#)表示相关工艺后的采样点。(c)饮用水处理厂 3 不同处理工艺中 1,4-二氧六环的浓度。

图 4. (a)采样点,(b)浓度,以及(c)地下水中和地表水中 1,4-二氧六环的风险商数。

图 5. (a)工业污水处理厂和(b)城市污水处理厂中 1,4-二氧六环的浓度及去除率。(c)污水处理厂出水的风险商数。

作者简介

共同第一作者Feng Yang,南京大学环境学院水污染控制与绿色资源回收国家重点实验室研究生。

共同第一作者Lulu Zhang,南京大学环境学院水污染控制与绿色资源回收国家重点实验室研究生。

通讯作者李秀文,南京大学环境学院博士后研究员。主要从事工业废水毒性评估与削减技术等方向。发表论文多篇。

声  明


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#国际前沿 #文献分享 #科研内容科普 #知识分享 

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  1. CONNECT:[ UseTime:0.000797s ] mysql:host=127.0.0.1;port=3306;dbname=b460;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.000843s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.001186s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.001357s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000532s ]
  6. SELECT * FROM `set` [ RunTime:0.000579s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000638s ]
  8. SELECT * FROM `article` WHERE `id` = 473244 LIMIT 1 [ RunTime:0.001109s ]
  9. UPDATE `article` SET `lasttime` = 1770559639 WHERE `id` = 473244 [ RunTime:0.007624s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 65 LIMIT 1 [ RunTime:0.000367s ]
  11. SELECT * FROM `article` WHERE `id` < 473244 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.001041s ]
  12. SELECT * FROM `article` WHERE `id` > 473244 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.000685s ]
  13. SELECT * FROM `article` WHERE `id` < 473244 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.001220s ]
  14. SELECT * FROM `article` WHERE `id` < 473244 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.001244s ]
  15. SELECT * FROM `article` WHERE `id` < 473244 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.002376s ]
0.169513s