| 彭祎,赵玉杰,王璐,贺泽英,张艳伟,耿岳,刘潇威.南疆棉花转产区土壤和农产品中邻苯二甲酸酯(PAEs)污染分析和评价[J].农业环境科学学报,2018,37(12):2678-2686. |
| 南疆棉花转产区土壤和农产品中邻苯二甲酸酯(PAEs)污染分析和评价 |
| Contamination and risk assessment of phthalates in soils and agricultural products after cotton cultivation in southern Xinjiang, northwest China |
| 投稿时间：2018-01-31 |
| DOI：10.11654/jaes.2018-0173 |
| 中文关键词: 邻苯二甲酸酯 农产品 地膜 风险控制 新疆 |
| 英文关键词: phthalate ester agricultural products mulch film risk control Xinjiang |
| 基金项目:国家农产品质量安全风险评估重大专项（GJFP201701201） |
| 作者 | 单位 | E-mail | | 彭祎 | 农业农村部农产品质量安全环境因子风险评估实验室, 农业农村部农产品质量安全环境安全因子控制重点实验室, 天津 300191 | | | 赵玉杰 | 农业农村部农产品质量安全环境因子风险评估实验室, 农业农村部农产品质量安全环境安全因子控制重点实验室, 天津 300191 | | | 王璐 | 农业农村部农产品质量安全环境因子风险评估实验室, 农业农村部农产品质量安全环境安全因子控制重点实验室, 天津 300191 | | | 贺泽英 | 农业农村部农产品质量安全环境因子风险评估实验室, 农业农村部农产品质量安全环境安全因子控制重点实验室, 天津 300191 | | | 张艳伟 | 农业农村部农产品质量安全环境因子风险评估实验室, 农业农村部农产品质量安全环境安全因子控制重点实验室, 天津 300191 | | | 耿岳 | 农业农村部农产品质量安全环境因子风险评估实验室, 农业农村部农产品质量安全环境安全因子控制重点实验室, 天津 300191 | | | 刘潇威 | 农业农村部农产品质量安全环境因子风险评估实验室, 农业农村部农产品质量安全环境安全因子控制重点实验室, 天津 300191 | xwliu2006@163.com |
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| 中文摘要: |
| 为评估棉花转产地区农产品中邻苯二甲酸酯（PAEs）风险，在新疆传统棉花种植区域（阿克苏市、沙雅县、新和县和库车县），采集94对农产品-土壤样品，40个农田地膜残留样品，进行17种PAEs含量水平分析和来源解析。结果表明，阿克苏地区土壤样品中17种PAEs累积含量范围为0~1 622 μg·kg-1，平均含量180.2 μg·kg-1，检出率95.7%，阿克苏地区农产品样品中17种PAEs累积含量范围为0~2 430.1 μg·kg-1，平均含量190.6 μg·kg-1，检出率93.6%。阿克苏地区残膜量0.1~42.1 kg·hm-2，残膜膜厚5.6~6.85 μm，破碎度6.4~30.3 mg·块-1。相关性分析结果表明新疆阿克苏地区农产品∑PAEs与土壤∑PAEs呈正相关（R=0.529，P<0.01），土壤、蔬果中的∑PAEs和棉花种植时间上未发现相关性（P>0.05），土壤∑PAEs和农膜残留量呈正相关（R=0.767，P=0.044），和破碎度（R=0.778，P<0.01）及农膜厚度（R=0.786，P=0.021）呈负相关，提示南疆棉花转产区PAEs污染关键控制点是降低农田残膜量。 |
| 英文摘要: |
| To assess the risk of phthalate esters (PAEs) in agricultural products after long-term cotton planting, 94 pairs of soil-fruit/vegetables and 40 mulch film residues were collected from the traditional cotton planting area including Akesu, Shaya, Xinhe, and Kuche counties in southern Xinjiang Uygur Autonomous Region. Residue levels of 17 kinds of PAEs were determined, and source analysis was carried out. High detection rates of 95.7% and 93.6% of PAEs were observed in soils and agricultural products, respectively. Total phthalates content in soils ranged from 0 to 1622 μg·kg-1 with an average content of 180.2 μg·kg-1. Total phthalates content in agricultural products ranged from 0 to 2 430.1 μg·kg-1 with an average content of 190.6 μg·kg-1. Average ∑PAEs in vegetables (220.1 μg·kg-1) was higher than that in fruits (182.3 μg·kg-1). PAE content of agricultural products in the four counties was, in decreasing order:Shaya (297 μg·kg-1) > Xinhe (273 μg·kg-1) > Kuche (119.3 μg·kg-1) > Akesu (65 μg·kg-1); and a similar pattern was observed in soils:Shaya (305.1 μg·kg-1) > Xinhe (143.5 μg·kg-1) > Kuche (122.6 μg·kg-1) > Akesu (115.8 μg·kg-1). DEP and DEHP contributed more than 71.1% of the total PAEs in soil samples, and DMP, DEP, and DEHP contributed more than 86.4% of that in agricultural products. ∑PAEs of root vegetables (534.7 μg·kg-1) was significantly higher than those of other fruits and vegetables. Human exposure assessment, based on daily intake of contaminated agriproducts and dose for reproductive toxicity, indicated no reproductive damage after long term exposure. The mulch film residues in Akesu Region ranged from 0.1 to 42.1 kg·hm-2, mulch film thickness from 5.6 to 6.85 μm, and degree of size breakages from 6.4 to 30.3 mg·piece-1. Correlation analysis indicated that ∑PAEs in agricultural products (n=94) was positively correlated (R=0.529, P<0.01) with ∑PAEs in soils (n=94) at the 0.01 level. No correlation was observed between ∑PAEs in soils or agricultural products and the time of cotton planting (P>0.05), however, positive correlation between ∑PAEs in soils and mulch film residues (R=0.767, P=0.044) was observed at the 0.05 level. ∑PAEs in soils were negatively correlated with the degree of size breakages (R=0.778, P<0.01), and the mulch film thickness (R=0.786, P=0.021). The correlation analysis results suggest that reducing the mulch film residues in farmland is the critical control point of PAEs pollution in Xinjiang cotton planting area. |
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