YANG Chunxia,ZHANG Fang.Analysis of the Soil Chlorate and Perchlorate Pollution Levels and Pollution Sources in Lycium barbarum L.Orchards[J].Northern Horticulture,2024,(22):67-72.[doi:10.11937/bfyy.20241686]
枸杞园土壤中氯酸盐和高氯酸盐污染水平及污染源分析
- Title:
- Analysis of the Soil Chlorate and Perchlorate Pollution Levels and Pollution Sources in Lycium barbarum L.Orchards
- 文章编号:
- 1001-0009(2024)22-0067-06
- Keywords:
- Lycium barbarum L.orchards; soil; chlorate; perchlorate; content detection; pollution level and pollution source
- 分类号:
- S 158.3
- 文献标志码:
- A
- 摘要:
- 以枸杞园表层土壤为试材，采用同位素内标结合超高效液相色谱-串联质谱（UPLC-MS/MS）法，研究了宁夏不同种植区（农垦、石嘴山、中宁、银川、贺兰、固原）枸杞园土壤中氯酸盐和高氯酸盐含量、污染分布特征及污染来源,以期为打造优质、绿色枸杞园提供参考依据。结果表明：土壤中氯酸盐检出率70%，含量为0～16.9 μg·kg-1，高氯酸盐检出率100%，含量为3.4～667.9 μg·kg-1。农垦、石嘴山、银川、贺兰枸杞园土壤氯酸盐和高氯酸盐含量相对较高，其他地区含量相对较低。不同枸杞园土壤类型不同，对危害物的富集能力不同，但无显著规律可循。灌溉水中氯酸盐检出率92.3%，含量为0～28.700 μg·L-1，高氯酸盐检出率100%，含量为0～4.090 μg·L-1，均未超过GB 5749-2022《生活饮用水卫生标准》中氯酸盐（0.70 mg·L-1）和高氯酸盐（0.07 mg·L-1）限量值。施用肥料中氯酸盐未检出，高氯酸盐平均含量达4.02 mg·kg-1。经相关性分析，土壤与水中氯酸盐和高氯酸盐含量相关性低（0.345、-0.148），土壤与肥料中高氯酸盐呈中度相关（0.444），水与肥料中高氯酸盐含量呈高度相关（0.863）。可初步判断，土壤中的氯酸盐主要来源于灌溉水和肥料，以肥料贡献率较大。肥料是高氯酸盐主要贡献者。
- Abstract:
- Taking Lycium barbarum L.orchard top soil as the test material，the content of chlorate and perchlorate in soil of Lycium barbarum L.orchard in different planting areas (Nongkeng，Shizuishan，Zhongning，Yinchuan，Helan and Guyuan)，pollution distribution and pollution sources were studied by using internal standard isotope combined with ultra-high performance liquid chromatography-tandem mass spectrometry (UPLC-MS/MS),in order to provide reference for creating high quality and green Lycium barbarum L.orchards.The results showed that the detection rate of chlorate was 70% and the content was 0-16.9 μg·kg-1，and the detection rate of perchlorate was 100% and the content was 3.4-667.9 μg·kg-1 in the soil.The content of chlorate and perchlorate in the soil of Nongken，Shizuishan，Yinchuan and Helan Lycium orchard was relatively high，while the content in other areas was relatively low.Different soil types in different Lycium barbarum L.orchard had different enrichment capacity of harmful substances，but there was no significant rule to follow.The detection rate of chlorate in irrigation water was 92.3%，the content was 0-28.700 μg·L-1,and the detection rate of perchlorate was 100%，the content was 0-4.090 μg·L-1.The limit values of chlorate (0.70 mg·L-1) and perchlorate (0.07 mg·L-1) in GB 5749-2022 Sanitary Standard for Drinking Water were not exceeded.Chlorate was not detected in fertilizer,and the average content of perchlorate was as high as 4.02 mg·kg-1.The correlation analysis showed that the correlation between the contents of chlorate and perchlorate in soil and water was low (0.345,-0.148)，the correlation between soil and perchlorate in fertilizer was moderate (0.444)，and the correlation between water and perchlorate in fertilizer was high (0.863).It could be preliminatively judged that the chlorate in soil mainly comes from irrigation water and fertilizer，and the contribution rate of fertilizer was larger.Fertilizer was the main contributor to perchlorate.
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备注/Memo
第一作者简介：杨春霞（1983-），女，硕士，副研究员，现主要从事农产品质量安全与营养品质等研究工作。E-mail：xia0113@126.com.基金项目：宁夏回族自治区重点研发计划资助项目（2022BEG03069）；2021年宁夏青年拔尖人才资助项目。收稿日期：2024-04-18