Pressure dissolution and real sample matrix calibration for multielement analysis of raw agricultural crops by inductively coupled plasma atomic emission spectrometry

Journal Article · Mon Nov 01 00:00:00 EST 1982 · Anal. Chem.; (United States)

DOI:https://doi.org/10.1021/ac00250a004· OSTI ID:6857441

Kuennen, R W; Woinik, K A; Fricke, F L; Caruso, J A

A method utilizing a pressure dissolution technique to minimize sample pretreatment is described for multielement analysis of raw agricultural crops by inductively coupled argon plasma atomic emission spectrometry. The procedure employs a 30-min pressure dissolution of sample composite with 6 M HCI at 80/sup 8/C in 60-mL linear polyethylene bottles. A sample introduction system is also described which permits direct atomization of complex organic matrices. Combined with a real sample matrix callbration technique, this introduction system allows rapid and accurate multielement analysis of complex HCl sample matrix solutions. The procedure compares favorably to more time-consuming conventional wet ashing methods for the determination of major, minor, and trace elements occurring in lettuce, potatoes, peanuts, soybeans, spinach, sweet corn, and wheat. Recoveries for spiked samples, precision studies, and analyses of NBS reference materials demonstrate the reliability and accuracy of the procedure. Advantages and limitations of this technique relative to conventional wet ashing methods are discussed. 2 figures, 7 tables.

• Research Organization: Elemental Analysis Research Center, Cincinnati, OH
• OSTI ID: 6857441
• Journal Information: Anal. Chem.; (United States), Vol. 54:13
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
BERYLLIUM
EMISSION SPECTROSCOPY
CADMIUM
CALCIUM
CHROMIUM
COPPER
CROPS
MULTI-ELEMENT ANALYSIS
ELEMENTS
IRON
LEAD
MAGNESIUM
MANGANESE
MOLYBDENUM
NICKEL
PHOSPHORUS
POTASSIUM
ZINC
DISSOLUTION
LETTUCE
MAIZE
PEANUTS
POTATOES
SOYBEANS
SPINACH
TRACE AMOUNTS
WHEAT
ALKALI METALS
ALKALINE EARTH METALS
CEREALS
CHEMICAL ANALYSIS
FOOD
GRAMINEAE
GRASS
METALS
NONMETALS
PLANTS
SEEDS
SPECTROSCOPY
TRANSITION ELEMENTS
TUBERS
VEGETABLES
400104* - Spectral Procedures- (-1987)