Potential exposure to metals and health risks of metal intake from Tieguanyin tea production in Anxi, China

被引:22
|
作者
Sun, Jingwei [1 ,2 ,3 ,5 ]
Hu, Gongren [1 ]
Liu, Kangkang [2 ]
Yu, Ruilian [1 ]
Lu, Qiuyan [4 ]
Zhang, Yunfeng [1 ,2 ]
机构
[1] Huaqiao Univ, Coll Chem Engn, Xiamen 361021, Fujian, Peoples R China
[2] Quanzhou Normal Univ, Sch Resources & Environm Sci, Quanzhou 362000, Fujian, Peoples R China
[3] Fujian Prov Key Lab Ecol Toxicol Effects & Contro, Putian 351100, Peoples R China
[4] Fujian Ctr Dis Control & Prevent, Fuzhou 350000, Fujian, Peoples R China
[5] State Ocean Adm, Inst Oceanog 3, Key Lab Marine Biogenet Resources, Xiamen 361021, Fujian, Peoples R China
基金
美国国家科学基金会;
关键词
Tieguanyin tea; Metals; Thallium; Human health risk assessment; HEAVY-METALS; THALLIUM; LEAVES; SOIL; CONTAMINATION; SPECIATION;
D O I
10.1007/s10653-018-0212-y
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
The metal content of Tieguanyin tea from Anxi, Southeast China, was studied. Leaching experiments were designed based on the local tea-drinking habits, and tea infusions were prepared using three types of water and two methods of soaking tea. Twelve metals (Cd, As, Cr, Pb, Se, Sb, Ag, Tl, Cu, Zn, Be, and Ba) were measured by inductively coupled plasma mass spectrometry (ICP-MS), and a human health risk assessment was performed. The results showed that the quality of water used for steeping tea has a direct effect on the leaching concentrations of metals in the tea infusion and this effect can be reduced by using pure water or commercially available drinking water. Further, the two tea-soaking methods used by local residents can reduce the metal intake. The health risk assessment determined that the carcinogenic risk values of Cr, As, and Pb (Cr > Pb > As) were within an acceptable range (10(-7)-10(-4)); therefore, the concentrations of these metals in tea infusions do not pose substantial carcinogenic risk to tea drinkers. The results also indicate that the high concentrations of Tl in the tea infusions pose a substantial noncarcinogenic risk and may result from the dissolution characteristics of Tl and the water quality.
引用
收藏
页码:1291 / 1302
页数:12
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