Use of Inductively‐coupled Plasma Spectrometry for the Simultaneous Determination of Macro‐ and Micronutrients in NH₄HCO₃‐DTPA Extracts of Soils

Abstract

Twenty‐six soils were extracted with 1M NH4HCO3‐. 0.005M DTPA solution (Soltanpour and Schwab, 1977). Inductively‐coupled plasma optical emission spectrometry (ICP‐OES) was used to simultaneously determine P, K, Zn, Fe, Cu, and Mn in the extracts. These analytical results were compared with those obtained with a colorimetric method for P and flame atomic absorption spectrometry (AAS) for the cations. It was necessary to change the carbonate‐bicarbonate matrix (1M) to a more soluble matrix in order to prevent formation of crystals and clogging at the capillary tip. This was achieved by a 1:5 dilution with 0.5N HNO3 followed by shaking for 10 min. Results from the ICP‐OES and the flame AAS methods were comparable. Analysis of P by ICP‐OES gave larger values than analysis by a colorimetric method due to presence of organic P in the extracts.

Effect of Vermicompost on Chemical and Biological Properties of an Alkaline Soil with High Lime Content during Celery (<i>Apium graveolens</i> L. var. dulce Mill.) Production

“…Values of pH, EC, organic matter and total N contents of organic materials were determined with the same methods used for soil samples. For total P, K, Ca, Mg, Fe, Zn, Mn, and Cu contents of the organic fertilizers, samples were wet-digested (4:1 HNO3:HClO4) and measured with ICP-OES (Soltanpour and Workman, 1981). Soil enzyme activities were measured as described by Tabatabai Fig.…”

Effect of zinc fertilizer applications on yield and element contents of some registered chickpeas varieties

“…Dried plant samples were digested using a H2SO4 and H2O2 mixture (Bayrakli, 1986). The amount of Zn existing in the solutions was measured by using ICP-AES (Varian Vista model) device, phosphorous was measured through an UV-160 spectrophotometer with Barton solution and nitrogen was measured by using a Kjhdahl distillation device (Soltanpour and Workman, 1981). The data obtained through the measurements were statistically analyzed using Minitab and Mstat software (Yurtsever, 1984).…”

Changes in nutrient concentrations of maize (zea mays var. intendata) leaves under potassium and magnesium applications in Central Anatolia

“…indentata) Some physical and chemical properties of the soil samples taken from the experimental areas are given in Table 2. Soils were slightly alkaline, non-saline, low in organic matter, high in lime, and clay loam Soltanpour & Workman (1981) s:w, soil water ratio and loam in texture. At the two locations, N was low, extractable K and Ca were very high while Mg was sufficient, Fe and Zn were low while Mn, B and Cu were adequate.…”

“…They were analyzed for; pH in a 1:2.5 soil:water solution ratio with pH-meter; electrical conductivity (EC) in a 1:5 soil:water solution by ECmeter (Jackson 1962); organic matter content using the Smith & Weldon (1941) method; lime content by the Scheibler Calcimeter (Çağlar 1949); texture by Bouyoucos Hydrometer (Bouyoucos 1951); inorganic N (NH 4 -N+NO 3 -N) in a 2 N KCl extract by Kjeldahl distillation; available P using the Olsen method with a spectrophotometer (Bayraklı 1987); exchangeable cations (K, Ca, Mg and Na) in 1 N NH 4 OAc solution (Bayraklı 1987) by the ICP-AES (Inductively Coupled Plasma-Atomic Emission Spectrometer; Varian, Vista Axiel Simultaneous) (Soltanpour & Workman 1981); extractable Fe, Zn, Mn, Cu in the 0.05 M DTPA+0.01 M CaCl 2 +0.1 M TEA (pH= 7.3) solution (Lindsay & Norvell 1978) using the ICP-AES; and available B in a CaCl 2 +mannitol solution (Kacar 1972) using the ICP-AES.…”