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acetonitrile相关的网络例句

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Result The experimental results showed that ultrasonic extraction time was 30 min, temperature was 40℃, acetonitrile-water was used as the mobile phase and the column temperature was 30℃, the drift tube temperature of ELSD was 80℃ and the air flow rate was 2.00 L/min.

结果]最终确定超声萃取,其中,提取时间30 min,提取温度40℃,以乙腈-水为流动相,柱温30℃,蒸发光散射检测器漂移管温度80℃,载气流速2.00 L/min。

The optimum technical conditions were obtained as follows: the experimental drift tube at a temperature of 90 ℃, mobile phase of acetonitrile∶ water=70∶30, flow rate as 1 mL/min, nitrogen flow rate as 2.0 L/min, and a good separation of glucose and xylose in the hydrolysate.

实验条件优化得出在漂移管温度为90 ℃,流动相为乙腈∶水(70∶30),流速为1 mL/min,氮气流速为2.0 L/min条件下,经Shodex Asahipak NH2P-50(4.6 m×250 mm,5 μm)色谱柱后,可以将水解液中的主要糖成分葡萄糖和木糖进行良好的分离。

A method for simultaneous determination of oxytetracycline, tetracycline, chlortetracycline and choramphenicol in seafood was successfully developed using high performance liquid chromatography with ammonium acetate/water and acetonitrile as the mobile phase. The results showed that the four antibiotics were well separated under the optimum conditions, with the limits of detection being 32 μg/kg for oxytetracycline, 15 μg/kg for tetracycline, 23 μg/kg for chlortetracycline, and 19 μg/kg for choramphenicol. The recovery of standard additions was 76~92% and the relative standard deviation was 0.8-4.5%. The method is rapid, sensitive, accurate and reliable and can be applied in the analysis of antibiotic residues in seafood.

建立了同时检测海产品中土霉素、四环素、金霉素、氯霉素残留的高效液相色谱分析方法,以醋酸铵-醋酸/水缓冲液和乙腈作为流动相,通过二元梯度洗脱,使四种抗生素获得了较好的分离,以基线噪音的3倍计算,土霉素、四环素、金霉素、氯霉素最低检出浓度分别为32μg/kg、15μg/kg、23μg/kg、19μg/kg,在添加浓度范围内,四种抗生素的加标回收率为76~92%,相对标准偏差为0.8~4.5%,该方法快速、灵敏、准确,可靠性高,可用于海产品中抗生素残留的色谱分析。

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