Determination of boron using mannitol-assisted electrothermal vaporization for sample introduction in inductively coupled plasma mass spectrometry

Separate vaporisation of boric acid and inorganic boron from tungsten sample cuvette–tungsten boat furnace followed by the detection of boron species by inductively coupled plasma mass spectrometry and atomic emission spectrometry (ICP-MS and ICP-AES)

“…The quantitative release of boron species assignable to B(OH) 3 can be achieved at the vaporisation stage, permitting the complete retention of non-volatile boron in the furnace. Because of the volatility of B(OH) 3 , it is necessary to add a chemical modifier to retain the analyte during the ashing stage. For the chemical modifier NaOH was suitable to determine all the boron species by TBF-ICP-AES as described below.…”

“…In the commonly used ETV procedure, chemical modification techniques have been applied. For the vaporisation of B, a mannitolassisted ETV-ICP-MS was proposed [3][4][5]. NH 4 F was also effective to retain boron species [6].…”

“…or to improve the detectability. It is well known that B(OH) 3 and its salts (sodium tetraborate (Na 2 B 4 O 7 ·10H 2 O), sodium metaborate (NaBO 2 )) show a relatively high toxicity. As the thermal properties, these are all volatile.…”

“…In the preliminary paper [13], B(OH) 3 and BN were determined selectively with a dual tungsten boat furnace (TBF) vaporiser system by ICP-MS and ICP-AES. Once an aliquot of sample solution is pipetted into a sample cuvette made of tungsten, two boron species, the one having high volatility and the other low, can be determined sequentially by setting two different vaporisation temperatures.…”

Determination of Trace Amounts of Boron in Steels by On-line Reaction/Concentration/Separation Using an Anion-exchange Column

“…Some chemicals, such as mannitol, fluoride and ammonia, have been used for eliminating the memory interferences. [1][2][3][4] A flow-injection system with extraction treatment has also been coupled with ICP-MS to remove the effects of sample matrices for the determination of sub-μg g -1 levels of boron in iron and steel. 5 On the other hand, the high-performance liquid chromatography (HPLC) methods with a spectrophotometric or a fluorometric detector have been proposed for determining boron in steels.…”