An Inductively Coupled Plasma Optical Emission Spectrometric Method for the Determination of Toxic and Nutrient Metals in Spices after Pressure-Assisted Digestion

Abstract

The aim of this study was to develop a simple and rapid inductively coupled plasma optical emission spectrometric (ICP-OES) method for the determination of 17 metals (Ag, Al, B, Ba, Bi, Ca, Cd, Co, Cr, Cu, Fe, Mg, Mn, Ni, Pb, Tl and Zn) in packaged spices. For this purpose, the spice samples (200 mg) in the form of powder were submitted to pressure-assisted wet-acid digestion with a mixture of 6 mL concentrated HNO3 and 1 mL H2O2. The proposed method was validated in terms of linearity, trueness, precision, limits of detection (LODs) and limits of quantification (LOQs). Good method trueness, precision and linearity were observed for the examined elements. The LODs of the examined analytes ranged between 0.08 and 5.95 mg kg−1. The present method was employed for the analysis of twenty-two packaged commercially available spices including asteroid anise, clove, cardamon, cinnamon, curry, coriander, turmeric, cumin, white pepper, black pepper, nutmeg, allspice, red pepper, paprika, ginger, green pepper and pink pepper from the Greek market that are widely consumed. A wide variety of metal of different concentration ranges were determined in the samples.

Assessment of Heavy Metal Contents in Some Common Spices Available in the Local Market of North Shewa Zone, Oromia Regional State, Ethiopia

“…In turmeric samples, the concentrations of Cu were lower than most reported literature from Iran[36], Eritrea [31], Saudi Arabia [15], Bangladesh [1], Ghana [10], and Iraq [37]. However, the copper concentration reported in this study was higher than in Poland [38], and Greece [41]. In general, all spices studied have a low copper content and are not dangerous for human consumption.…”

“…These elements can become toxic when their intake exceeds certain permissible levels. However, lead (Pb), arsenic (As), and cadmium (Cd) are non-essential metals that exhibit serious health concerns since they are non-biodegradable, have long biological half-lives, accumulate in the body, and cause adverse effects [15][16][17][18]. Exposure to these heavy metal ions above the permissible levels can cause acute and chronic toxicity, and damage to blood components, lungs, kidneys, liver, central nervous system, and immune system.…”

Simultaneous DPAdSV for Heavy Metals Determination in the Seawater of a Former Bauxite Mining Area

“…Therefore, developing selective, sensitive, fast, simple and accurate methods is required for the determination of these metals in the environment (3)(4)(5). Methods for the analysis of metal ions include ICP-AES (6), AAS (7), ICP-MS (8), ICP-OES (9), ISEs (10), TXRF (11) and PXRF (12). However, almost all of  The abbreviations list is in pages 194-195. these methods imply for routine operations and selection high costs, and a long time at the pre-concentration stage before measurement, for the determination of very small metal amounts (13,14).…”

Optimization of Pb Adsorption from Seawater from Former Bauxite Mines Using Crab Shell Waste

“…Methods for the analysis of metal ions (Table 1) include the Inductively Coupled Plasma Atomic Emission Spectroscopy (ICP-AES) method. [19], Atomic Absorption Spectrometry (AAS) [20], Inductively Coupled Plasma-Mass Spectrometry (ICP-MS) [21], Inductively Coupled Plasma Atomic Optical Emission Spectrophotometry (ICP-OES) [22], ion-selective electrodes (ISEs) [23], Total Reflection X-Ray Fluorescence Spectroscopy (TXRF) [24], Portable X-ray fluorescence (PXRF) [25]. However, this method requires high costs for routine operations, and the cost of selection is quite expensive, almost all of these methods for the determination of very small amounts of metal require quite a long time at the pre-concentration stage before measurement.…”