文档介绍：Determination of 8 Kinds of Acid Herbicide Residues
in Water by Derived-GC/MS Method
ZUO Hai-ying ZHANG Li
Institute of Hydrogeology and Environmental Geology Institute of Hydrogeology and Environmental Geology
Shi Jiazhuang, China Shi Jiazhuang, China
e-mail: ihegzuo@ Zhangli11506@
Abstract- A novel method extracting with ether, deriving II. EXPERIMENTAL PART
by methanol, deteminating with gas chromatography-mass
A. Instrument with the main reagent
spectrometry (GC-MS) for analyzing 8 kinds of acid
herbicide residues in water has been established. The Instrument: Gas chromatography mass spectrometer
optimum experimental conditions were as follows: Adding (Model: GCMS-2010, Shimadzu), sub-funnel (SUPELCO),
8 drops of concentrated sulfuric acid; adding mL KD concentration device (SUPELCO), 10mL bottle derivative
methanol; deriving min. Linear of all herbicides is (SUPELCO).
good in the range of to µg/L, and the detection Reagent: dichloromethane (pesticide grade), ethyl ether
limit were under or equal to µg/L. the results gained (pesticide grade), methanol (pesticide grade), n-hexane
from method were accurate and stable, and the recoveries (pesticide grade), concentrated sulfuric acid (excellent grade
of all herbicides were between ~%at 、 pure), the anic reagents are TEDIA Products .
、 1.