عنوان مقاله :
اثر نوع عصاره گير و دفعات عصاره گيري بر آزاد سازي پتاسيم غيرتبادلي از ميكاها
عنوان به زبان ديگر :
Nonexchangeable K Release from Three Micaceous Minerals Using Sequential Extraction and Different Extracting Solutions
پديد آورندگان :
كلباسي ، محمود نويسنده kalbasi, mahmoud , خادمي، حسين نويسنده دانشكده كشاورزي,گروه علوم خاك,دانشگاه صنعتي اصفهان,ايران Khademi, H , حسيني فرد، جواد نويسنده , javad
اطلاعات موجودي :
فصلنامه سال 1388 شماره 50
كليدواژه :
بيوتيت , پتاسيم غيرتبادلي , فلوگوپيت , مسكوويت , عصاره گيري
چكيده لاتين :
This study was conducted to determine the effect of 3 extractants on K release from biotite, phlogopite and muscovite. The minerals were grouped to <60 and 60-100 fim size classes. Particles CEC were saturated with calcium. Sequential extraction up to 30 times was carried out using 0.01M HC1, 1M NH4OAc and 0.05M BaCl2 solutions and cumulative concentration of K was calculated for each extractant. There was a difference among the 3 extractants in cumulative K release values from the three minerals. The highest values of cumulative K release were obtained by 0.01M HC1 and 1M NH4OAC for less than 60 and 60-100 ^m particle sizes, respectively. The amount of K release from muscovite was even higher when 1M NH4OAc and 0.05M BaCl2 solutions were used as extractants. This might indicate that muscovite cannot be considered as an ineffective source of available K in soils. Furthermore, particle size had a great impact on nonexchangeable K release from micaceous minerals. Coarser particles released higher quantity of K as compared to that of finer particles. Therefore, particle size distribution of different micaceous minerals in soils may be a factor that causes a difference in the amount of K release from soils.
Keywords: Biotite, Muscovite, Nonexchangeable K, Phlogopite, Sequential extraction.
عنوان نشريه :
علوم و فنون كشاورزي و منابع طبيعي، علوم آب و خاك
عنوان نشريه :
علوم و فنون كشاورزي و منابع طبيعي، علوم آب و خاك
اطلاعات موجودي :
فصلنامه با شماره پیاپی 50 سال 1388
كلمات كليدي :
#تست#آزمون###امتحان