[Determination of inorganic elements in five kinds of Mongolia medicines by high pressure sealed microwave digestion-ICP-AES].

Five kinds of Mongolia medicines, Eridun-Urile, Deduhonghuaqiweiwan, Tonglage-5, Uzhumu-7 and Geiwang-9 are digested with HNO3-HClO4 system by high pressure system-sealed Microwave Digestion. The 17 inorganic elements content of magnesium, aluminum, calcium, chromium, manganese, ferrum, cobalt, nickel, copper, zincum, arsenic, selenium, strontium, molybdenum, silver, cadmium, plumbum in the solution are determined by ICP-AES. The results are proved to be reliable by adding standard recovery experiment. The recovery is 97.48%-103.01% for Mg, 102.71%-105.60% for Al, 102.00%-105.53% for Ca, 98.78%-100.34% for Cr, 101.93%-104.65% for Mn, 100.34%-104.51% for Fe, 103.13%-105.46% for Co, 100.07%-103.22% for Ni, 97.25%-99.06% for Cu, 98.57%-100.10% for Zn, 102.35%-105.37% for As, 100.24%-104.59% for Se, 99.19%-102.70% for Sr, 103.35%-105.78% for Mo, 99.65%-101.32% for Ag, 102.73%-105.32% for Cd, and 104.76%-106.35% for Pb by this method. The relative standard deviation is less than 3.3% for all the elements. And the method has high accuracy and good precision The determination results indicate that the content of element in Five Kinds of Mongolia Medicines is 0-15 microg x g(-1) for Cd, Ag, As, Pb, Co, Ni, Cu; 15-100 microg x g(-1) for Mo, Se, Zn, Cr; 100-3 000 microg x g(-1) for Mn, Sr, Fe, Mg, Al; 3 000-8 000 microg x g(-1) for Ca. Among of the five kinds of mongolia medicines, the content of elements has great differences. The order is Ca > Mg > Al > Fe > Mn > Sr > Se > Zn > Mo > Cu > Pb > As >Cr > Ni > Co > Cd > Ag for Eridun-Urile; Ca > Al > Fe > Mg > Mn > Sr > Se > Mo > Zn > Ni > Cr > Cu > Pb > As > Co > Cd > Ag for Deduhonghuaqiweiwan; Ca > Fe > Mg > Al > Mn > Sr > Se > Zn > Mo > Cr > Ni > Cu > Pb > As > Co > Cd > Ag for Tonglage-5, Ca > Al > Mg > Fe > Sr > Mn > Se > Zn > Co > Mo > Cr > Cu > Pb > As > Ag > Ni > Cd for Uzhumu-7 and Mg > Ca > Al > Fe > Se > Mn > Zn > Sr > Mo > Cu > Cr > Pb >As > Ag > Co = Cd = Ni for Geiwang-9. The content of common elements Ca, Mg, Fe, Mn, Zn, Cu are higher. These results provide theoretical basis for developing quality control, improving the potency of Mongolia medicines and developing new Mongolia medicines.