نتایج جستجو برای: flame emission
تعداد نتایج: 195111 فیلتر نتایج به سال:
Tin content in samples of canned fruits and vegetables was determined by hydride generation inductively coupled plasma atomic emission spectrometry (HG-ICP-OES), and it was compared with results obtained by standard method of flame atomic absorption spectrometry (AAS). Selected tin emission lines intensity was measured in prepared samples after addition of tartaric acid and followed by hydride ...
† These authors contributed equally 9 10 Abstract. To obtain more and accurate biogenic volatile organic compound (BVOC) emission rates 11 for more plant species in China and further improve the accuracy of emission rates used in BVOC 12 emission inventories, we conducted field measurements and developed a statistical approach for 13 estimating representative emission rates. We performed field ...
With the aid of a sulfur-specific flame photometric detector, an emission of volatile sulfur was detected from leaves of cucumber (Cucumis sativus L.), squash and pumpkin (Cucurbita pepo L.), cantaloupe (Cucumis melo L.), corn (Zea mays L.), soybean (Glycine max [L.] Merr.) and cotton (Gossypium hirsutum L.). The emission was studied in detail in squash and pumpkin. It occurred following treatm...
Abstract Internal temperature monitoring of high-speed propulsion systems is highly important for engine performance evaluation and lifetime prediction. As a passive optical measurement method without the need an external light source flow field interference, emission spectrum technique has good application prospects harsh environments. main combustion product, high-temperature water vapor show...
A method based on standard additions to the sample was used to measure potassium (K+) in human erythocytes with an ion-selective electrode. A computer program was developed for rapid analysis of data obtained with the electrode. The analysis takes into account factors such as temperature that may affect electrode behavior. Results obtained by the method agree with those obtained by flame-emissi...
The one-step synthesis and characterization of nanostructured metallic platinum microspheres by a low-pressure flat flame technique is presented here. Field emission scanning electron microscopy (FESEM), X-ray diffraction (XRD) and X-ray Photoelectron Spectroscopy (XPS) analyzed the as-derived powders. Collectively, the results obtained from these analyses confirmed the formation of microsphere...
Sodium and potassium may be measured simultaneously, using a modified Eppendorf flame photometer. After automatic sampling and dilution of the plasma, the potassium content is measured, using the existing Eppendorf optical and photomultiplier system. The sodium emission is measured by three silicon photovoltaic cells mounted behind an interference filter for sodium, sited on the atomiser casing...
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