Matches in SemOpenAlex for { <https://semopenalex.org/work/W3078117> ?p ?o ?g. }
Showing items 1 to 70 of
70
with 100 items per page.
- W3078117 endingPage "5" @default.
- W3078117 startingPage "1010" @default.
- W3078117 abstract "Dry and wet ashing methods have been used in the analysis of garden vegetables for Pb. The reliability of wet ashing has been verified by the method of standard additions. Comparison of dry and wet ashing showed good agreement for a variety of garden vegetables. Sample size was more strictly limited for the wet-ashed samples, which led to lower sensitivity. Vegetable samples are commonly analyzed for a number of trace elements, which introduces additional constraints on sample preparation, notably because of Cd loss on dry ashing. Pretreatment with HNO3/H2SO4 ash aid eliminated Cd loss. Reliability of dry ashing with pretreatment was shown with NBS SRM Orchard Leaves, Pine Needles, Spinach, and Tomato Leaves. The analysis was insensitive to ashing temperature in the range 480-625 degrees C. A practical detection limit for the method is about 2 ppm Pb, dry weight basis (DWB). Care must be exercised to avoid contamination of the sample with lead at this level by improper handling. Segregation and acid washing of glassware and protection of the sample from contact with any object not demonstrably clean was necessary. No evidence was found of Pb contamination at this level from tap water washing of fresh vegetables, forced-air oven drying, or grinding with mortar and pestle. No special clean room facilities or laboratory air purification measures were used. Sensitivity was increased 3-fold by extraction with dithizone in CHCl3 followed by back-extraction into dilute HCl. Detection limits were not improved, however, because of variation in the extraction results. The instrumental method for assessing effective correction for back-ground absorbance showed adequate compensation, although comparison of direct and extractive determinations showed a small but significant difference between the methods of about 1 ppm Pb (DWB)." @default.
- W3078117 created "2016-06-24" @default.
- W3078117 creator A5000574013 @default.
- W3078117 creator A5057216680 @default.
- W3078117 creator A5058373921 @default.
- W3078117 date "1982-07-01" @default.
- W3078117 modified "2023-09-23" @default.
- W3078117 title "Sample preparation in determination of lead in garden vegetables by flame atomic absorption spectrophotometry." @default.
- W3078117 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/7118782" @default.
- W3078117 hasPublicationYear "1982" @default.
- W3078117 type Work @default.
- W3078117 sameAs 3078117 @default.
- W3078117 citedByCount "0" @default.
- W3078117 crossrefType "journal-article" @default.
- W3078117 hasAuthorship W3078117A5000574013 @default.
- W3078117 hasAuthorship W3078117A5057216680 @default.
- W3078117 hasAuthorship W3078117A5058373921 @default.
- W3078117 hasConcept C107872376 @default.
- W3078117 hasConcept C112570922 @default.
- W3078117 hasConcept C119128265 @default.
- W3078117 hasConcept C121332964 @default.
- W3078117 hasConcept C127413603 @default.
- W3078117 hasConcept C185592680 @default.
- W3078117 hasConcept C18903297 @default.
- W3078117 hasConcept C2778576202 @default.
- W3078117 hasConcept C33619061 @default.
- W3078117 hasConcept C39432304 @default.
- W3078117 hasConcept C43617362 @default.
- W3078117 hasConcept C4725764 @default.
- W3078117 hasConcept C528095902 @default.
- W3078117 hasConcept C62520636 @default.
- W3078117 hasConcept C86803240 @default.
- W3078117 hasConcept C99293441 @default.
- W3078117 hasConceptScore W3078117C107872376 @default.
- W3078117 hasConceptScore W3078117C112570922 @default.
- W3078117 hasConceptScore W3078117C119128265 @default.
- W3078117 hasConceptScore W3078117C121332964 @default.
- W3078117 hasConceptScore W3078117C127413603 @default.
- W3078117 hasConceptScore W3078117C185592680 @default.
- W3078117 hasConceptScore W3078117C18903297 @default.
- W3078117 hasConceptScore W3078117C2778576202 @default.
- W3078117 hasConceptScore W3078117C33619061 @default.
- W3078117 hasConceptScore W3078117C39432304 @default.
- W3078117 hasConceptScore W3078117C43617362 @default.
- W3078117 hasConceptScore W3078117C4725764 @default.
- W3078117 hasConceptScore W3078117C528095902 @default.
- W3078117 hasConceptScore W3078117C62520636 @default.
- W3078117 hasConceptScore W3078117C86803240 @default.
- W3078117 hasConceptScore W3078117C99293441 @default.
- W3078117 hasIssue "4" @default.
- W3078117 hasLocation W30781171 @default.
- W3078117 hasOpenAccess W3078117 @default.
- W3078117 hasPrimaryLocation W30781171 @default.
- W3078117 hasRelatedWork W1966595978 @default.
- W3078117 hasRelatedWork W1971740144 @default.
- W3078117 hasRelatedWork W2085904331 @default.
- W3078117 hasRelatedWork W2154677559 @default.
- W3078117 hasRelatedWork W2267390493 @default.
- W3078117 hasRelatedWork W2332047910 @default.
- W3078117 hasRelatedWork W2372141178 @default.
- W3078117 hasRelatedWork W2388650227 @default.
- W3078117 hasRelatedWork W2769597073 @default.
- W3078117 hasRelatedWork W2182044471 @default.
- W3078117 hasVolume "65" @default.
- W3078117 isParatext "false" @default.
- W3078117 isRetracted "false" @default.
- W3078117 magId "3078117" @default.
- W3078117 workType "article" @default.