土壤-蔬菜作物系统中砷形态分析及迁移规律  

Speciation and Migration of Arsenic in Soil-vegetable System

作　　者：林小梅 高功敏 翁城武 Lin Xiaomei;Gao Gongmin;Weng Chengwu(Longyan Wuping Environmental Monitoring Station,Longyan 364300;Comprehensive Technology Service Center Of Quanzhou Customs,Quanzhou 362000,China)

机构地区：[1]龙岩市武平环境监测站,福建龙岩364300 [2]泉州海关综合技术服务中心,福建泉州362000

出　　处：《广东化工》2020年第23期34-35,45,共3页Guangdong Chemical Industry

基　　金：福建省科技计划项目(2020Y0075);厦门海关科技项目(2020XY09)。

摘　　要：利用HPLC-ICP-MS分析技术,分析了蔬菜中常见的毒性较强的5种砷形态(包括AsB、As(III)、MMA、DMA、As(V))含量,并首次对其来源进行分析。结果表明:大多数蔬菜砷含量较低,且形态较单一,主要以As(III)和As(V)的形式存在,少数蔬菜(油菜叶、蕨菜、油麦菜)砷含量较丰富,形态多样,除了以As(III)和As(V)的形式存在,还存在AsB、DMA、MMA的有机砷。通过对菜园土壤和该菜园所种植的蔬菜的各形态砷含量的检测数据进行比较和相关性分析,结果表明:蔬菜中As(III)和As(V)与土壤中As(III)和As(V)成显著正相关,其它形态砷相关性不显著。Using HPLC-ICP-MS analysis technology, analyzes the common toxicity in vegetables strong 5 kinds of arsenic forms(including AsB, As(III), MMA, DMA, the As(V)) content, and to analyze its origin for the first time. The results showed that arsenic was mainly in the form of As(III) and As(V) in the soil, and most of the vegetables were low in arsenic content and had a single form, mainly in the form of As(III) and As(V), and a few vegetables(rape, fern, and rape) had abundant arsenic content, which existed in the form of As(III) and As(V), As well As the organic arsenic of AsB, DMA and MMA. The test data showed that As(III) and As(V) in vegetables were significantly positively correlated with As(III) and As(V) in soil, other forms of arsenic were not significantly correlated.

关 键 词：蔬菜 砷形态 迁移规律 

分 类 号：TQ[化学工程]