Abstract
A method of direct simultaneous determination of rare earth (Y, La, Ce, Nd, Sm, Gd, Tb, Ho, Er, Yb, Sc) and trace elements (V, Cr, Ga, Rb, Sr, Zr, Nb, Ag, In, W, Pb), Fe and Mn in sediments and ash of aquatic vegetations of Ivan’kovo Reservoir using atomic emission spectrometry with ac arc discharge is developed. MAES spectrum analyzer (“VMK-Optoelektronika”) and software package “Atom 3.2” are used with a high-resolution (0.003 nm) diffraction spectrograph DFS-13-2 (flat grating 1200 lines/mm), thus providing determination of 11 from 17 rareearth elements within an optical range of 402.71 - 452.64 nm. The detection limits of the method range within 1-3 mg/kg, depending on the element. Spectral overlaping of the molecular bands of CN and analytical lines of Pr, Eu, Dy, Tm, Lu renders determination of these elements impossible.
Highlights
Áîëåå äâàäöàòè ëåò êîìïàíèÿ ñïåöèàëèçèðóåòñÿ íà ñîçäàíèè è ïðîèçâîäñòâå îáîðóäîâàíèÿ äëÿ ïðÿìîãî àòîìíî-ýìèññèîííîãî ñïåêòðàëüíîãî àíàëèçà ïîðîøêîâûõ ïðîá êàê ïðèðîäíûõ îáúåêòîâ, òàê è ìåòàëëîâ è ñïëàâîâ
Ïðèìåíåíèå ìíîãîêàíàëüíûõ àíàëèçàòîðîâ ýìèññèîííûõ ñïåêòðîâ ìíîãîêàíàëüíûì àíàëèçàòîðîì ýìèññèîííûõ ñïåêòðîâ (ÌÀÝÑ) êîìïàíèè «ÂÌÊ-Îïòîýëåêòðîíèêà» ïîçâîëÿåò ïîâûñèòü ïðîèçâîäèòåëüíîñòü ðàáîò è óëó÷øèòü àíàëèòè÷åñêèå õàðàêòåðèñòèêè îïðåäåëåíèÿ ìèêðîýëåìåíòîâ â èññëåäóåìûõ ãåîõèìè÷åñêèõ îáúåêòàõ
Summary
ÀÒÎÌÍÎ-ÝÌÈÑÑÈÎÍÍÎÅ ÎÏÐÅÄÅËÅÍÈÅ ÐÅÄÊÎÇÅÌÅËÜÍÛÕ È ÐÅÄÊÈÕ ÝËÅÌÅÍÒΠ ÝÊÎËÎÃÎ-ÃÅÎËÎÃÈ×ÅÑÊÈÕ ÎÁÚÅÊÒÀÕ Ñ ÈÑÏÎËÜÇÎÂÀÍÈÅÌ ÀÍÀËÈÇÀÒÎÐÀ ÌÀÝÑ1 Ðàçðàáîòàíà ìåòîäèêà ïðÿìîãî îäíîâðåìåííîãî îïðåäåëåíèÿ ðåäêîçåìåëüíûõ (Y, La, Ce, Nd, Sm, Gd, Tb, Ho, Er, Yb, Sc), ðåäêèõ ýëåìåíòîâ (V, Cr, Ga, Rb, Sr, Zr, Nb, Ag, In, W, Pb), à òàêæå Fe è Mn â ýêîëîãî-ãåîëîãè÷åñêèõ îáúåêòàõ ìåòîäîì àòîìíî-ýìèññèîííîé ñïåêòðîìåòðèè ñ äóãîâûì ðàçðÿäîì ïåðåìåííîãî òîêà è ðåãèñòðàöèåé ñïåêòðîâ ìíîãîêàíàëüíûì àíàëèçàòîðîì ñïåêòðîâ (ÌÀÝÑ) ïðîèçâîäñòâà ÎÎÎ «ÂÌÊ-Îïòîýëåêòðîíèêà» ïðè ââåäåíèè ïîðîøêîâûõ ïðîá ñ ïîòîêîì âîçäóõà.  âûáðàííîì ñïåêòðàëüíîì äèàïàçîíå îò 402,71 äî 452,64 íì ìîæíî îïðåäåëÿòü 11 èç 17 ÐÇÝ ñ ïðåäåëàìè îáíàðóæåíèÿ îò 1 äî 3 ìã/êã â çàâèñèìîñòè îò ýëåìåíòà (ñïåêòðàëüíûå íàëîæåíèÿ ìîëåêóëÿðíûõ ïîëîñ CN íà àíàëèòè÷åñêèå ëèíèè Pr, Eu, Dy, Tm, Lu äåëàþò íåâîçìîæíûì îïðåäåëåíèå ýòèõ ýëåìåíòîâ).
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