北京市农田回用再生水中无机阴离子的分布规律研究.pdf

第7卷第12期
食品安全质量检测学报
Vol. 7 No 12
2016年12月
ournal of Food Safcty and Qualily
I)cc..2016
北京市农田回用再生水中无机阴离子的
分布规律研究
张秀彤,李安”,潘立刚,新欣欣,李冰茹
(北京农业质量标准与检测技术研究中心/农业部农产品质量安全风险评估实验室(北京),北京1000
摘要:目的建立离子色谱法测定北京市农田回用再生水水体中F、NO3、NO2、CI、SO12和PO6种无
机阴离子的分析方法。方法分别采集北京某再生水厂出水口、再生水灌溉渠、农田灌溉点的36份水样,经
Dionex Onguard II Ag/I银离子交换柱处理后,采用离子色谱法测定色谱柱为 Dionex opac.AS11-HC,检
测器为电导检测器。结果该方法能有效分离6种无机阴离子,且在0.016-10mg工浓度范围内线性关系良好
r2>0.99,相对标准偏差在0.549%-3.65%之间。北京市农田回用再生水中检出了不同浓度水平的6种无机阴离
子、其中CI检出浓度最高,浓度范围为121-21lmgL.不同位点的再生水中的浓度存在空间分布差异,NO3和
PO3在再生水出水口的浓度要高于再生水灌溉渠和农田灌溉点。结论本方法稳定性和分离效果好,准确率
高、可适用于再生水中6种阴离子的监测。建议加强农田回用再生水的长期监测、并根据作物种类和土壤类型
等制定更加严格的农田回用再生水水质标准
关键词:再生水:离子色谱法;无机阴离子
Distribution rules of inorganic anions in reclaimed water for farmland
irrigation in Beiiing
ZHANG Xiu-tong, LI An, PAN Li-gang, JIN Xin-xin, LI Bing-ru
(Beijing Research Center for Agricultura Standards and Testing/Risk Assessment Lab for Agro-prodcts (Beijing)
Ministry o/Agricullure, Beijing 100097, China)
ABSTRACT: Objective To cstablish a method for the detcrmination of 6 kinds of inorganic anions including I
NO N, CI, SO, and PO, in reclaimed water for farmland irrigation in Beijing by ion chromatography Method
Thirty-six reclaimed water samples from Beiing recycled water outlet, reclaimed water irrigation canal and irrigation
poinl o! Bcijing wcre detected by ion chromatography aller Lrcatmcnl with silver ion cxchange column of Dionex
On(Guard II Au/H column. The column was ionex Ion PACIMAS1L-HC and the deleclor was clectrical conduclivil
detector. Results The established method could effectively separate 6 kinds of inorganic anions and had good linear
nship in the range of 0.016-10 m/(0.99)with the relative standard dev ations of0.54%3.65%.Six kinds
on inorganic anions with dillerent levels were dctcclcd in reclaimed water for farmland irrigation in Bcijing, and a
large amount of CI, the concentration range of which was 121-21I mg/L, was detected in it. The concentration o
基金项目:北京市农林科学院科技创新能力建设专项(KJCX20150408)
Fund: Supported by Scicncc and Tcchnology Innovation Ability Construction Irojcct of Bcijing Academy of Agriculture and Forestry Scicnccs
(KJCX20150408)
通讯作者:李安,博士,助理研究员,主要研究方向为农产品质量安全。T-~mai:ionian(a126.com
orresponding author I An. Ih. D, Assistant Rcscarch Fcllow Cijin Rcscarch enter of Agricultural Standards and Tcsting, Beijing 100097,
Chima.H-mail:lionlian(a126.com
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