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 04:00:00 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), Journal Name: Anal. Chem.; (United States) Vol. 54:13; ISSN ANCHA
• Country of Publication: United States
• Language: English

Related Subjects

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