A novel and eco-friendly analytical method using microwave-induced combustion (MIC) and ion chromatography (IC) was proposed for the determination of chlorine and sulfur in corn, potato, rice, and wheat edible flours from several countries (Austria, Brazil, Belgium, Ecuador, Poland, and Turkey). Agreement with certified reference material (NIST 1568a, rice flour) was 97% for Cl and 90% for S. The limits of quantification were 5.2 μg g⁻¹ for Cl and 1.5 μg g⁻¹ for S. The content of elements did not vary significantly between wheat flours from different countries. The highest concentration of Cl and S was found in wheat flours (Cl: 424 to 714 μg g⁻¹; S: 1020 to 1477 μg g⁻¹) when compared with corn (Cl: 330 to 408 μg g⁻¹; S: 751 to 895 μg g⁻¹), rice (Cl: 204 to 219 μg g⁻¹; S: 1007 to 1041 μg g⁻¹), and potato starch flours (Cl < 5.2 μg g⁻¹; S: 8.44 to 11.2 μg g⁻¹). It is important to highlight that the proposed method presents low limits of detection, low relative standard deviations, and high sample throughput, which indicates that it is an excellent alternative as a new analytical method that could be used for routine analysis of edible flours.

提出了一种使用微波诱导燃烧（MIC）和离子色谱（IC）的新型环保分析方法，用于测定来自多个国家（奥地利，巴西，比利时，厄瓜多尔，波兰和土耳其）。用标准物质（NIST 1568a，米粉）协议是Cl的97％和90％为S.定量分别为5.2微克克限^-1为Cl和1.5微克克^-1为S.元素的含量没有不同国家的小麦粉之间差异很大。Cl和S的最高浓度在小麦粉中发现（CL：424至714微克克^-1 ; S：1020年至1477年微克克^-1）当与玉米相比（CL：330至408微克克^-1; S：751至895μgg ^-1），大米（Cl：204至219μgg ^-1； S：1007至1041μgg ^-1）和马铃薯淀粉粉（Cl <5.2μgg ^-1； S：8.44至11.2μgg ^-1）。重要的是要强调的是，该方法具有检测限低，相对标准偏差低和样品通量高的优点，这表明它是一种可用于日常食用面粉分析的极佳替代方法。