Discrimination of Chili Powder Origin Using Inductively Coupled Plasma–Mass Spectrometry (ICP-MS), Inductively Coupled Plasma–Optical Emission Spectroscopy (ICP-OES), and Near Infrared (NIR) Spectroscopy

Differentiation of Commercially Available Kratom by Purported Country of Origin using Inductively Coupled Plasma–Mass Spectrometry,

“…We also looked in the literature for other studies involving the geographical area attribution of the same regions in order to better understand the soil variations. Hwang et al used elemental content measured in chili powder to discriminate among Korean, Chinese, and Vietnamese origins and noted the significance of the trace elements, Co, Cu, Mn, Ni, Sr, V, and Zn in their model. With the exception of V, we also noted the significance of these elements in origin discrimination in Vietnam, in particular, Cu, Sr, and Zn.…”

“…Other factors including the absorbability of the plant, chemical state of the soil, climate, microorganism activity, pesticide use, pollution, water, cultivation practices, and processing methods can also cause elemental concentration differences. These differences have been determined using various analytical techniques such as wavelength dispersive X‐ray fluorescence (WDXRF), inductively coupled plasma–mass spectrometry (ICP‐MS), isotope ratio–mass spectrometry (IRMS), and laser ablation–inductively coupled plasma–mass spectrometry (LA–ICP–MS) and have been used for geographical origin determination . More recent work includes the origin determination of cocaine, marijuana, and synthetic cannabinoids using elemental content measured by ICP‐MS .…”

Multielement Analysis of Pakchoi (Brassica rapa L. ssp. chinensis) by ICP-MS and Their Classification according to Different Small Geographical Origins

“…To the best of our knowledge, this is the first time the mineral elements are used for discrimination of pakchoi geographical origins. The chemometric-based ICP-MS approach was applied to distinguish many types of foods and plants, such as cabbage [ 6 ], chili [ 17 ], and tea [ 18 ]. PCA was used widely in those reports that could find clearly and preciously the most important elements for the classification of the analytes.…”

Impact of physical and chemical parameters on square wave anodic stripping voltammetry for trace Pb2+ detection in water

“…Although highly sensitive, these techniques are labor intense, expensive, and reliant on non-portable instrumentation that requires frequent maintenance and trained lab personnel. 19,20 The issue of lead leaching from premise plumbing demands a sensitive detection technique that is simple, rapid, and capable of repeated analyses by consumers. 21 Square wave anodic stripping voltammetry (SWASV) is a powerful electroanalytical technique commonly used to detect HMIs, 22,23 and is affordable, portable, user-friendly, and capable of directly and rapidly determining Pb 2+ in potable water.…”