The determination of urea in soil extracts and related samples - a review
Lambert, D., Sherwood, John and Francis, Paul 2004, The determination of urea in soil extracts and related samples - a review, Australian journal of soil research, vol. 42, pp. 709-717.
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The determination of urea in soil extracts and related samples - a review
Although the dominant methods for the determination of urea in clinical applications incorporate selective enzymatic hydrolysis of urea, the determination of urea in soil extracts is complicated by the presence of urease inhibitors. The spectrophotometric determination of urea with an acidic solution diacetyl monoxime and semicarbazide is a viable option but traditional manual procedures are time-consuming. New variations on these procedures, based on microplates or flow-injection analysis methodologies, allow a far greater number of samples to be analysed with high precision and sensitivity.