CARBIDE-TREATED GRAPHITE CUVETTES FOR ELECTROTHERMAL ATOMIZATION PREPARED BY IMPREGNATION WITH METAL CHLORIDES

被引：20

作者：

ALMEIDA, MC ^{[1
]}

SEITZ, WR ^{[1
]}

机构：

[1] UNIV NEW HAMPSHIRE,DEPT CHEM,DURHAM,NH 03824

来源：

APPLIED SPECTROSCOPY | 1986年 / 40卷 / 01期

关键词：

CARBIDES - CHEMICAL ANALYSIS - Equipment - GRAPHITE - METALLIC COMPOUNDS - SPECTROSCOPIC ANALYSIS;

D O I：

10.1366/0003702864815556

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

In order that carbide coatings could be prepared, graphite cuvettes were (1) placed in liquid TiCl//4, MoCl//5, WCl//6 under reduced pressure to fill the void space in the graphite with metal chloride; (2) allowed to soak for 24 h in water to hydrolyze the metal chloride; (3) heated for 1200 s at 120 degree C and 10 s at 500 degree C in an electrothermal atomizer to dry the metal hydroxide and form the oxide; and (4) heated to 1800 degree C for 30 s to form the carbide. The formation of metal carbide was confirmed by gravimetry and x-ray diffraction. X-ray diffraction also indicated the presence of oxide on Ti- and W-treated cuvettes and of multiple metal carbide species on Mo- and W-treated cuvettes.

引用

页码：4 / 8

页数：5

共 17 条

[1] DETERMINATION OF CADMIUM AND LEAD IN SEA-WATER AFTER EXTRACTION USING ELECTRO-THERMAL ATOMIZATION - MINIMIZATION OF INTERFERENCES FROM CO-EXTRACTED SEA SALTS [J].