محبوبترین نویسندگان :
نویسندگان مقالات پربازدید :
مقالات شیمیایی 2013
جزئیات رویداد
همایش ، رویداد ، ژورنال
اینستاگرام تی پی بین
حوزه های تحت پوشش رویداد

  • variability of total and mobile element contents in ash derived from biomass combustion

    نویسندگان :
    کلمات کلیدی :
    جزئیات بیشتر مقاله
    • تاریخ ارائه: 1392/07/24
    • تاریخ انتشار در تی پی بین: 1392/07/24
    • تعداد بازدید: 1063
    • تعداد پرسش و پاسخ ها: 0
    • شماره تماس دبیرخانه رویداد: -
     seven samples of the ash derived from biomass, representing both fly and bottom ash, were analysed for a wide spectrum of total and mobile contents of nutrient and potentially risk elements. several techniques, x-ray fluorescence (xrf) spectrometry, instrumental neutron activation analysis (inaa), proton-induced gamma-ray emission (pige) and proton induced x-ray emission (pixe), inductively coupled plasma-atomic emission spectrometry (icp-oes), and flame atomic absorption spectrometry (f-aas) were compared. the results showed fairly good agreement between the xrf and inaa results, where the correlation coefficients (r) varied between 0.96 and 0.98. lower contents documenting insufficient dissolution of the ash samples in the applied acid mixture were observed for both icp-oes and aas. in this case, weaker correlation with the inaa results not exceeding r = 0.7 were obtained. therefore, the sample decomposition step is a bottleneck of the accurate analysis of this type of materials. for the assessment of plant-available portions of the elements in the ash samples, the mehlich iii extraction procedure and the extraction with a 0.11 mol l−1 solution of ch3cooh were applied. the results showed relatively low mobility of the elements (especially micronutrients) in the ash samples regardless of their source and composition, suggesting limited immediate effect of direct ash application as a fertilizer.

سوال خود را در مورد این مقاله مطرح نمایید :

با انتخاب دکمه ثبت پرسش، موافقت خود را با قوانین انتشار محتوا در وبسایت تی پی بین اعلام می کنم
مقالات جدیدترین رویدادها
مقالات جدیدترین ژورنال ها