Provider: ingentaconnect
Database: ingentaconnect
Content: application/x-research-info-systems
TY - ABST
AU - Chaplin, M. H.
AU - Dixon, A. R.
TI - A Method for Analysis of Plant Tissue by Direct Reading Spark Emission Spectroscopy
JO - Applied Spectroscopy
PY - 1974-01-01T00:00:00///
VL - 28
IS - 1
SP - 5
EP - 13
KW - Plant analysis
KW - Emission spectroscopy
KW - Spark
N2 - A procedure was developed for the rapid quantitative determination of K, P, Ca, Mg, Mn, Fe, Cu, B, and Zn content in plant tissue by direct reading emission spectrometry using spark excitation and the rotating disc electrode technique. Aliquots of standard reference material, ground
to pass a 40 mesh screen, are weighed into high form porcelain crucibles and ashed at 450°C for 6 h. Five milliliters of an internal standard-buffer solution (0.2% cobalt and 0.5% lithium in 1 *N* HCl) are added to the remaining ash. The resulting solution is subjected to a 30-sec
burn on the spectrometer, and the intensity ratios for each element are recorded. Known concentrations (X) and intensity ratio units (*Y*) are entered into a stepwise regression computer program, and the linear, quadratic, and cubic regressions of *Y* on *X* are determined.
Sample values are entered as *Y* into the appropriate regression equation which is then solved for *X*. If quadratic or cubic regression equations are used, the program will select the appropriate root. Relative standard deviations for samples determined over a several-day period
generally were less than 10%.
UR - http://www.ingentaconnect.com/content/sas/sas/1974/00000028/00000001/art00002
M3 - doi:10.1366/000370274774332894
UR - http://dx.doi.org/10.1366/000370274774332894
ER -