FIELD: chemistry.
SUBSTANCE: method is based on the influence on the surface of an analysed sample by a focused laser radiation with pulse energy of 0.1-1.3 J and pulse duration of 100-130 mcs. An analysis of the laser spark glowing is carried out, which makes it possible to isolate spectral lines of vapours of determined elements and identify the spectral lines. To determine each of the elements the most sensitive lines of arsenic emission in the range 203-223 nm are used experimentally.
EFFECT: determination of optimal parameters of the laser-spark influence on samples of analysed food products to determine arsenic in the food raw material and foodstuff.
2 cl
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD FOR LASER-SPARK EMISSION DETERMINATION OF TOXIC ELEMENTS IN FOOD RAW MATERIAL AND PRODUCTS | 2011 |
|
RU2483294C2 |
| METHOD FOR LASER-SPARK EMISSION DETERMINATION OF LANTHANUM, CERIUM, PRASEODYMIUM AND NEODYMIUM IN METAL ALLOYS AND POWDERS | 2013 |
|
RU2548584C2 |
| METHOD FOR LASER-SPARK EMISSION DETERMINATION OF BERYLLIUM IN METAL ALLOYS AND POWDERS | 2015 |
|
RU2583858C1 |
| LASER-SPARK SPECTRUM ANALYZER | 2000 |
|
RU2163370C1 |
| MOBILE LASER EMISSION SUBSTANCE ANALYSER | 2020 |
|
RU2751434C1 |
| METHOD OF DETERMINING WEIGHT RATIO OF OXYGEN IN METAL POWDERS | 2013 |
|
RU2530483C1 |
| METHOD FOR DETERMINING TRACE CONSTITUENTS BY LASER-SPARK EMISSION SPECTROSCOPY | 2013 |
|
RU2550590C2 |
| METHOD FOR LASER ATOMIC EMISSION SPECTRAL ANALYSIS OF HAIR | 2015 |
|
RU2589960C1 |
| MODE OF LASER-SPARK SPECTRAL ANALYSIS | 2006 |
|
RU2300094C1 |
| METHOD AND DEVICE FOR SPECTRAL ANALYZING OF MATERIAL ELEMENT COMPOSITION | 1991 |
|
RU2007703C1 |
