Citation:
ZHAO Chen-Chen, WANG Chao, GUO Wen-Jian, LYU Yi-Bing, CHEN Hong-Yu. Determination of Eight Kinds of Alkylphenols and Alkylphenol Ethoxylates in Soil by Ultrasonic-assisted Extraction and High Performance Liquid Chromatography[J]. Chinese Journal of Analytical Chemistry,
;2018, 46(8): 1306-1313.
doi:
10.11895/j.issn.0253-3820.171283
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A method for determination of 8 kinds of alkylphenols (APs) and alkylphenol ethoxylates (APEOs) in soil was developed in this work. The samples were extracted by ultrasonic-assisted procedure for three times with dichloromethane-ethyl acetate (4:1, V/V), and purified by silica gel cartridge. Then the eight compounds were separated in 16 min by high performance liquid chromatography (HPLC) with a chromatographic column of Waters PAH C18 column (250 mm×4.6 mm, 5.0 μm). The mobile phase was acetonitrile-water (85:15, V/V) with a flow rate of 0.8 mL/min. Fluorescence detection was used to sensitively measure the targets. The excitation and emission wavelength was 228 nm and 300 nm, respectively. The qualitative and the quantitative detection were carried out based on retention time and external calibration peak area, respectively. The results indicated that linear relationships (R) were higher than 0.999 in the range of 10.0-500 μg/L for 8 kinds of APs and APEOs. The detection limits (MDL) were 1.2-3.0 μg/kg, and the quantification limits were 4.8-12.0 μg/kg. The recoveries of the 8 kinds of targets at high and low spiked levels were in the range of 69.9%-81.8% and 70.3%-84.8%, respectively. The corresponding relative standard deviations (RSD) were 2.2%-6.8% and 5.1%-12.1%, respectively. The method was simple and sensitive with high reproducibility, and could be applied in the detection of 8 kinds of alkylphenols and alkylphenol ethoxylates in soil.
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