Iodine determination in food samples was performed by inductively coupled plasma mass spectrometry (ICP-MS) after digestion by microwave-induced combustion (MIC). Sample masses up to 500 mg of bovine liver, corn starch, milk powder, or wheat flour were completely combusted using the MIC system. Ammonium nitrate (6 mol l(-1) solution, 50 μl) was used as an aid for ignition and vessels were charg...

The effects of microwave pretreatment on disintegration and mesophilic digestion of waste activated sludge (WAS), primary sludge (PS), combined (PS + WAS) sequencing batch reactor (SBR) sludge and anaerobically digested biocake were investigated by both household and bench scale industrial types microwaves at temperatures below and above boiling point. Pretreatment variables, temperature, inten...

In situ hybridization (ISH) protocol including microwaving pre-treatment regimes was developed and compared with protease digestion as a pre-treatment regime for its effects on detecting feline herpesvirus 1 (FHV-1) in formalin fixed, paraffin embedded tissue. We found that optimum results were obtained using microwave pre-treatment. The results showed that the use of microwave irradiation woul...

[I] Paterson, K. Y., Veillon, C., and H. M. Kingston, "Microwave Digestion of Biological Samples for Selenium Analysis by Electrothermal Atomic Absorption Spectrometry" in Introduction to Microwave Sample Preparation: Theory and Practice, H. M. Kingston and L. B. Jassie, eds., ACS Reference Book Series, in press. [2] Kingston, H. M., and Jassie, L. B., Anal. Chem. 58, 2534 (1986). (31 Pratt, K....

In an attempt to elucidate the mechanism of sterilization via microwave irradiation, a comparison of irradiated and heated T4 and T7 coliphages was executed. Samples of T4 and T7 were subjected to 20 seconds of microwave irradiation using a 2,450 MHz microwave oven. Additionally, samples of T4 and T7 were heated to 83° C for 25 minutes. The effects of the different treatments were evaluated via...

The digestion of neodymium (NdFeB) magnets was investigated in the context recycling rare earth elements (i.e., Nd, Pr, Dy, and Tb). Among more conventional techniques (microwave digestion, open vessel alkaline fusion), focused infrared (FID) tested as a possible approach to rapidly efficiently solubilize NdFeB magnets. FID parameters were initially optimized with unmagnetized magnet powder sub...

This study evaluated the effect of an industrial scale continuous flow microwave volumetric heating system in comparison to conventional commercial scale pasteurisation for the processing of tomato juice in terms of physicochemical properties, microbial characteristics and antioxidant capacity. The effect against oxidative stress in Caco-2 cells, after in vitro digestion was also investigated. ...

Two microwave-assisted digestion procedures, followed by inductively coupled plasma mass spectrometry (ICP-MS) analysis, were evaluated for the determination of trace elements in fine atmospheric aerosols (PM2.5) for air monitoring purposes. The first procedure used 40%(v/v) HNO3 and a digestion program with a maximum temperature of 175 o C. The second digestion procedure provided the dissoluti...

The complete hydrolysis of konjac glucomannan (KGM) with an acid or enzyme generally takes a long time. To accelerate KGM hydrolysis without diminishing the conventional quality, a diluted acid hydrolysis of KGM with sulfuric acid was conducted using a microwave digestion system. The optimum conditions of microwave-assisted acid hydrolysis for KGM were: 10 mL of 0.25 M sulfuric acid, hydrolysis...