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[Objective] To establish a method for determination of trace metal elements including Mn, Fe, Cu, Zn, Ca, Mg and Sr in SEMEN ZIZIPHI SPINOSAE. [Method] Using SEMEN ZIZIPHI SPINOSAE from the north of Shaanxi Province as experiment materials, the content of trace elements was determined by the inductively coupled plasma-atomic emission spectrometry (ICP-AES) after digestion with the acid mixture of HNO3+HClO4. The working conditions of ICP-AES were as follows: power of 1.2 kW, He flow of 14 L/min, carrier flow of 0.7 L/min, auxiliary gas flow of 1.2 L/min, spectroscopic temperature of 38 ℃, linear voltage of 104%, low detection height. The wavelength of analytical line was set at 257.610 nm for Mn, 259.940 nm for Fe, 327.396 nm for Cu, 213.856 nm for Zn, 393.366 nm for Ca, 279.553 nm for Mg, and 407.771 nm for Sr. [Result] The content of Mn, Fe, Cu, Zn, Ca, Mg and Sr in SEMEN ZIZIPHI SPINOSAE was 31.70, 59.86, 8.14, 53.38, 1 358.45, 2 624.80, 13.62 μg/g, respectively. Compared with other areas, the content of trace elements in SEMEN ZIZIPHI SPINOSAE from the north of Shaanxi province was just proper. [Conclusion] ICP-AES is an accurate and reliable method that can be used to determine the content of Mn, Fe, Cu, Zn, Ca, Mg and Sr in SEMEN ZIZIPHI SPINOSAE.
[Objective] To establish a method for determination of trace metal elements including Mn, Fe, Cu, Zn, Ca, Mg and Sr in SEMEN ZIZIPHI SPINOSAE. [Method] Using SEMEN ZIZIPHI SPINOSAE from the north of Shaanxi Province as experiment materials, the content of trace elements was determined by the inductively coupled plasma-atomic emission spectrometry (ICP-AES) after digestion with the acid mixture of HNO3 + HClO4. The working conditions of ICP-AES were as follows: power of 1.2 kW, He flow of The wavelength of the analytical line was set at 257.610 nm for Mn at 14 L / min, carrier flow of 0.7 L / min, and auxiliary gas flow of 1.2 L / min at a spectroscopic temperature of 38 ° C. , 259.940 nm for Fe, 327.396 nm for Cu, 213.856 nm for Zn, 393.366 nm for Ca, 279.553 nm for Mg, and 407.771 nm for Sr. [Result] The content of Mn, Fe, Cu, Zn, Ca, Mg and Sr in SEMEN ZIZIPHI SPINOSAE was 31.70, 59.86, 8.14, 53.38, 1 358.45, 2 624.80, 13.62 μg / g, respectively. Compared with ot her areas, the content of trace elements in SEMEN ZIZIPHI SPINOSAE from the north of Shaanxi province was just proper. [Conclusion] ICP-AES is an accurate and reliable method that can be used to determine the content of Mn, Fe, Cu, Zn , Ca, Mg and Sr in SEMEN ZIZIPHI SPINOSAE.