As. Al-ammar et al., Elimination of boron memory effect in inductively coupled plasma-mass spectrometry by ammonia gas injection into the spray chamber during analysis, SPECT ACT B, 55(6), 2000, pp. 629-635
Injection of 10-20 ml/min of ammonia gas into an inductively coupled plasma
-mass spectrometry (ICP-MS) spray chamber during boron determination elimin
ates the memory effect of a 1 mu g/ml B solution within a 2-min washing tim
e. Ammonia gas injection also reduces the boron blank by a factor of four a
nd enhances the sensitivity by 33-90%. Boron detection limits are improved
from 12 and 14 to 3 and 4 ng/ml, respectively, for mio ICP-MS instruments.
Trace boron concentrations in certified reference materials agree well usin
g ammonia gas injection. (C) 2000 Elsevier Science B.V. All rights reserved
.