堆肥中全有機態碳、氧化態碳與有機物質間之關係

Abstract

Element analysis, Walkley-Black wet oxidation, and loss-on-ignition (LOI) methods were used to determine total organic carbon (TOC), inorganic carbon (IC), oxidable carbon (OXC), and organic matter (OM) in compost samples. Twenty-three compost samples consisting of plant residues, poultry manure, swine manure, and cattle manure were collected from Taiwan local compost plants. Ratios between TOC, OXC, and LOI were not as adequate as in soils or other wastes. Thus, we proposed the linear regression equation to correlate TOC-OXC and TOC-LOI. The OXC and LOI can be converted into TOC by the equation TOC=0.980XC + 2.50 and a conversion factor 0.52, both with highly statistic significance at p < 0.001, respectively. The results could be of great help in laboratories in which the element analysis is not available or in simple routine analytical determination. 利用元素分析儀、濕氧化法與燃燒失重法(LOI)測定堆肥樣品之全有機態碳(TOC)、無機態碳(IC)、氧化態碳(OXC)與 有機物質(OM)。堆肥樣品係採集自台灣地區23家堆肥場，包括植物殘渣堆肥、雞糞堆肥、豬糞堆肥與牛糞堆肥。由於T0C、OXC與LOI的相互比値不完全相當於土壤或其它廢棄物樣品，因此，我們提出線性迴歸方程式，建立TOC與OXC以及TOC與LOI之間的相關。OXC與LOI可分別使用均具有顯著性相關的轉換方程式TOC=0.980XC+2.50與LOI測定有機物質中 52%爲TOC。這樣的結果對於沒有元素分析儀設備或作簡單例行性分析的實驗室十分有幫助的。