6533b85dfe1ef96bd12bdcf7
RESEARCH PRODUCT
Some observations on the determination of total heavy metals in sewage sludge by atomic absorption spectrophotometry after a pressurized acid digestion
M. De La GuardiaM.c. Gimeno-hernandezF. Pomaressubject
Acid digestionChemistrybusiness.industryAnalytical chemistrySewageHeavy metalsAnalytical Chemistrylaw.inventionchemistry.chemical_compoundDigestion (alchemy)Volume (thermodynamics)lawBakelitebusinessAtomic absorption spectroscopySpectroscopySludgeNuclear chemistrydescription
Abstract An economical and simple method for the flame atomic absorption spectrometric determination of Cd, Pb, Ni, Cu, Fe, and Zn in sewage sludges is described. Samples are treated with concentrated HNO 3 in a thermal oven using Pyrex glass tubes hermetically sealed with Bakelite screw caps. The effect of the digestion parameters, such as digestion time, acid volume, sample mass, and temperature, were studied. The precision and accuracy of this procedure were evaluated by the analysis of two BCR (Community Bureau of Reference, European Communities) certified sewage sludge samples (CRM 146 and 144).
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1990-12-01 | Microchemical Journal |