本文選題：有機(jī)酸　切入點(diǎn)：陰離子　出處：《食品工業(yè)科技》2017年03期 　論文類型：期刊論文

【摘要】：采用戴安ICS-5000離子色譜建立了諾麗果粉中14種有機(jī)酸和陰離子的分離測(cè)定方法。實(shí)驗(yàn)利用電導(dǎo)檢測(cè)器對(duì)諾麗果粉中常見有機(jī)酸和陰離子進(jìn)行測(cè)定。采用Ion Pac AS11-HC分析柱(帶Ion Pac AG11-HC保護(hù)柱)為色譜柱,以ASRS 300(4 mm)自循環(huán)電抑制模式,KOH作為淋洗液作梯度淋洗,流速為1.0 m L/min,柱溫30℃為色譜條件實(shí)現(xiàn)諾麗果粉中有機(jī)酸和陰離子理想分離。方法擁有良好的線性(r≥0.9988)、檢出限(≤0.508 mg/L)、回收率(91.50%~107.22%)和重復(fù)性(RSD 0.18%~5.2%,n=8)。諾麗果粉中含有的有機(jī)酸和陰離子主要是乳酸、蘋果酸、草酸、檸檬酸、氯離子、硫酸根和磷酸根。其中乳酸含量為5.893 mg/g,蘋果酸含量為74.631 mg/g,草酸含量為9.631 mg/g,檸檬酸含量為10.826 mg/g,氯離子含量為27.930 mg/g,硫酸根含量為4.226 mg/g,磷酸根含量為7.747 mg/g,丙酮酸含量為3.965 mg/g,其余幾種分析組分未檢出。該方法準(zhǔn)確可靠,可用于諾麗果粉中有機(jī)酸和無機(jī)陰離子的定性、定量分析。
[Abstract]:A method for the separation and determination of 14 organic acids and anions in Norrie fruit powder was established by Diane ICS-5000 ion chromatography. The common organic acids and anions in Norrie fruit powder were determined by conductance detector. Ion Pac AS11-HC was used for the analysis. Column (with Ion Pac AG11-HC protection column) as chromatographic column, The ASRS 300m 4mm) self-circulatory electric inhibition mode (Koh) was used as the eluent for gradient elution. An ideal separation of organic acids and anions from Nori fruit powder was achieved at a flow rate of 1.0 mL / min and column temperature of 30 鈩，

本文編號(hào)：1639662