An analytical method was proposed for the determination of Cl (via the InCl molecule at 267.2181 nm), Fe (252.7435 nm), and Si (252.8508 nm) in beer samples using sequential and simultaneous determination by high-resolution continuum source graphite furnace atomic absorption spectrometry (HR-CS GF AAS) in combination with high-resolution continuum source graphite furnace molecular absorption spectrometry (HR-CS GF MAS). First, Cl was determined using 600 °C and 1800 °C as the pyrolysis and vaporization temperatures, respectively, using In as a forming agent of the InCl molecule. Then, Si and Fe were simultaneously determined from the same sample aliquot using 2600 °C as the atomization temperature. A solution of Pd/Mg was used as a chemical modifier. The matrix effect was evaluated, and the results indicated that external calibration was possible using aqueous standard solutions. The limit of detection and quantification were 0.05 and 0.17 mg L^–1 for Cl, 0.08 and 0.26 mg L^–1 for Si, and 2.0 and 6.7 μg L^–1 for Fe, respectively. Recovery tests presented interval between 85 and 120% for the three analytes. Accuracy was confirmed by comparing the results obtained by the proposed method with those obtained by inductively coupled plasma optical emission spectrometry for Si and Fe and by ion chromatography for Cl. The concentration range found in ten beer samples was 106–277 mg L^–1 for Cl, 15–37 mg L^–1 for Si, and < 20–73 μg L^–1 for Fe.

提出了一种分析方法，该方法通过高分辨率连续谱源石墨炉原子吸收法同时进行和同时测定，用于测定啤酒样品中的Cl（通过InCl分子在267.2181 nm处），Fe（252.7435 nm）和Si（252.8508 nm）。光谱法（HR-CS GF AAS）与高分辨率连续谱源石墨炉分子吸收光谱法（HR-CS GF MAS）相结合。首先，使用In作为InCl分子的形成剂，分别使用600℃和1800℃作为热解温度和汽化温度来测定Cl。然后，使用2600°C作为雾化温度，从同一份等分试样中同时测定Si和Fe。Pd / Mg溶液用作化学改性剂。评估了基质效应，结果表明，使用标准水溶液可以进行外部校准。检出限和定量限为0.05和0.17 mg L^-1用于氯，0.08和0.26毫克的L ^-1为Si和2.0和6.7微克大号^-1为铁，分别。回收率测试表明，三种分析物的间隔介于85％和120％之间。通过比较本方法与通过电感耦合等离子体发射光谱法对Si和Fe以及通过离子色谱法对Cl所获得的结果，证实了准确性。10啤酒样品中发现的浓度范围为106-277毫克的L ^-1为氯，15-37毫克的L ^-1为Si和<20-73微克大号^-1为Fe组成。