The purpose of this study was to determine the contents of 12 metals in obtainable chalk sticks and assess their associated health risk. Chalk stick samples from 16 factories were analyzed by inductively coupled plasma-atomic emission spectrometry (ICP-AES). The results showed that 12 metals were detectable in white and colored chalks. The contents of Al, Fe, and Mg were in the range of 646.2–3909 μg/g, 408.8–2075.1 μg/g, and 125–6825.7 μg/g, respectively. Additionally, the levels of Cu, Pb, Mn, and Cr were ranked in the order of Cu>Cr>Pb>Mn, while the maximum levels of As, Ni, Cd, and Sn in all samples (9.90, 10.14, 7.27, and 6.08 μg/g, respectively) were relatively lower than those of other metals. Furthermore, the cumulative hazard index (HI) values of all metals and carcinogenic risk (CR) of As (1.12E-4), Ni (1.39E-4), and Cr (1.15E-4) for children were also higher than the threshold value (1.0E-6 to 1.0E-4), suggesting that chalk dust particles may exert adverse effects on children.

这项研究的目的是确定可获得的粉笔中12种金属的含量并评估其相关的健康风险。通过电感耦合等离子体原子发射光谱法（ICP-AES）分析了16家工厂的粉笔棒样品。结果表明，在白色和彩色粉笔中可检测到12种金属。Al，Fe和Mg的含量分别在646.2-3909μg/ g，408.8-2075.1μg/ g和125-6825.7μg/ g范围内。此外，Cu，Pb，Mn和Cr的含量按Cu> Cr> Pb> Mn的顺序排列，而所有样品中As，Ni，Cd和Sn的最大含量（9.90、10.14、7.27，和分别为6.08微克/克）相对低于其他金属。此外，所有金属的累积危害指数（HI）值和As（1.12E-4），Ni（1.39E-4）和Cr（1。