Determination of pesticides on agricultural samples by static SIMS analysis
- Idaho National Engineering Lab., ID (United States); and others
The development of methods to rapidly identify chemicals used in agriculture is important because detection is difficult using currently available technology. Rapid screening of samples is needed in the areas of crop application, enforcement, food and environmental safety. SIMS instrumentation developed at the Idaho National Engineering Laboratory is demonstrating tremendous potential in this area through its ability to detect and identify chemicals of various types on environmental samples including vegetation, soil and rocks, stainless steel, glass, etc. SIMS is attractive as an analytical tool for application to agricultural and environmental problems due to the following: (a) no sample preparation is required, (b) no generation of waste, (c) rapid analysis (< 10 minutes), (d) amenable to almost any sample type, (e) ideal for involatile ionic species (which can be difficult to detect by standard methods), (f) capable of {open_quotes}fingerprinting{close_quotes} (speciation), (g) non-destructive analysis allowing for additional analyses on the same sample. Detection is achieved using a SIMS instrument equipped with a novel perrhenate primary ion gun, and pulsed extraction of secondary ions. Together, these features allow analysis of insulating samples such as leaves and soils, which are not readily analyzed using conventional SIMS. Moreover, anion and cation spectra are acquired nearly simultaneously.
- OSTI ID:
- 210711
- Report Number(s):
- CONF-9505261--
- Country of Publication:
- United States
- Language:
- English
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