کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10846182 | 1070040 | 2005 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Interference by amino acids during the determination of 15N ammonium in soil
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کلمات کلیدی
موضوعات مرتبط
علوم زیستی و بیوفناوری
علوم کشاورزی و بیولوژیک
دانش خاک شناسی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Interference by amino acids during the determination of 15N ammonium in soil Interference by amino acids during the determination of 15N ammonium in soil](/preview/png/10846182.png)
چکیده انگلیسی
In the study of terrestrial N cycling, NH4+ concentration and 15N enrichment are routinely determined by colorimetric continuous flow analysis and microdiffusion methods. Amino acids can interfere in these determinations; consequently the aim of the present study was to evaluate the significance of the interference. Glycine and glutamine are key amino acids in soil and were therefore used as 'models'. Both glycine and glutamine interfered during continuous flow analysis, whereas interference during microdiffusion was of little importance. The effects of interference can be significant, e.g. estimates of gross mineralisation rate were reduced up to 33%, where we allowed for amino acid interference during determination of NH4+ concentration. The potential influence of amino acid interference emphasises that development of continuous flow analysis to increase NH4+ specificity is needed.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Soil Biology and Biochemistry - Volume 37, Issue 9, September 2005, Pages 1747-1750
Journal: Soil Biology and Biochemistry - Volume 37, Issue 9, September 2005, Pages 1747-1750
نویسندگان
Anke Herrmann, Victoria B. Willett, Elizabeth A. Stockdale, David L. Jones,