Measurement of the Azoxystrobin Content in Preservative-Treated Wood by High Performance Liquid Chromatography
- Vol. 39, Issue 1, Pages: 64-70(2025)
DOI: 10.12326/j.2096-9694.2024076
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Research Institute of Wood Industry,Chinese Academy of Forestry,Beijing 100091,China
Received:23 July 2024,
Revised:15 October 2024,
Accepted:2024-10-16,
Published:30 January 2025
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为实现防腐处理材中嘧菌酯(azoxystrobin)含量的准确快捷检测,首先建立嘧菌酯的高效液相色谱(HPLC)分析方法(紫外检测器及C18反相色谱柱,
V
(甲醇)∶
V
(水)=3
∶1为流动相,流速0.8 mL/min,检测波长220 nm),然后利用超声波提取木/竹材中的防腐剂,并优化提取的条件。结果表明:嘧菌酯在质量浓度10 ~ 120 mg/L的范围内,标准曲线的决定系数为0.999 7,线性相关性显著,分析样品的变异系数为1.39%和1.55%,样品的回收率为96.5% ~ 101.6%。在优化的超声波提取条件下:溶剂配比为
v
(甲醇)∶
v
(水)=8∶2,提取时间60 min,2个载药量水平,辐射松(
Pinus radiata
)、马尾松(
Pinus massoniana
)、杉木(
Cunninghamia lanceolata
)、和107杨(
Populus
×
euramericana
cv.‘74/76’)防腐木中嘧菌酯的回收率为95.5%~99.6%,标准偏差在0.8% ~ 3.8%范围内;毛竹(
Phyllostachys edulis
)提取回收率为84.4%和88.3%。本方法可用于检测处理材中嘧菌酯的含量,前处理步骤简便快捷,分析结果准确度高,重现性好。
In order to measure the content of azoxystrobin in treated wood precisely
a high performance liquid chromatography (HPLC) analysis method was constructed using a UV detector and C18 reversed-phase chromatography column
the
V
(methanol)∶
V
(water)=3∶1 as the mobile phase
with a flow rate of 0.8 mL/min and UV detection wavelength of 220 nm. Then
the ultrasonic extraction was used for pre-treatment of preservative extraction in wood/bamboo
and the extraction conditions were optimized. The results showed that the determination coefficient of the standard curve for azoxystrobin was 0.999 7 within the mass concentration range of 10~120 mg/L
and the linear correlation was significant. The coefficients of variation were 1.39% and 1.55%
and the recovery rates were 96.5%~101.6%. Under the optimized ultrasonic extraction conditions
including the solvent ratio of
v
(methanol)∶
v
(water)=8∶2
the extraction time of 60 minutes
and two retention levels
the azoxystrobin recovery rate of Radiata pine
masson pine
Chinese fir
and poplar‘107’was 95.5%~99.6%
with a standard deviation of 0.8%~3.8%. The recovery rates of Moso bamboo extraction were 84.4% and 88.3%
respectively. This method can be used to measure the azoxystrobin content in treated materials
with simple and fast pretreatment steps
achieving a hi
gh precision of analysis results and the good reproducibility.
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