Pressure variation in-syringe dispersive liquid-liquid microextraction associated with digital image colorimetry: Determination of cobalt in food samples

Dispersive surfactant micelle-mediated extraction combined with a smartphone-based portable colorimeter: a cost-effective and simple approach for cobalt determination

“…1,2 For dietary considerations, certain manufacturers suggest a daily cobalt intake of 1.0 mg. Conversely, specic experts in the eld have determined that the daily consumption of 1.4 mg of cobalt by an adult of 60 kg may result in detrimental health consequences. 3 Cobalt exposure can occur through various pathways, including food, drinking water, and inhalation of air. Environmental waters may become contaminated with cobalt due to both human activities and natural sources.…”

Deep eutectic solvent-based dispersive liquid–liquid microextraction followed by smartphone digital image colorimetry for the determination of carbofuran in water samples

“…9 DLLME requires microliters of extraction solvent and shows high enrichment factors. 13 However, DLLME also demonstrates some shortcomings. The extraction solvents and dispersive solvents in DLLME were not environmentally friendly and had to be premixed before injection.…”

Analytical techniques for determination of heavy metal migration from different types of locally made plastic food packaging materials using ICP‐MS

“…All have the potential to cause serious health effects with prolonged exposure or ingestion; all are considered carcinogens by the Agency for Toxic Substances and Disease Registration. Furthermore, long‐term oral exposure and excessive consumption of heavy metals in foodstuffs can lead to diseases such as birth defects, lung, skin, liver, bladder, and kidney cancer, gastrointestinal damage, and even death developed by arsenic (Chowdhury, 2020); Alzheimer's disease and breast cancer by aluminum (Klotz et al, 2017); bone demineralization, severe pulmonary, and gastrointestinal irritant by cadmium (Bernard, 2008); reduced reproductive, taste disorder, and hyposmia by zinc (Reddy et al, 2007); lung disease, heart problems, severe vomiting, stomach ulcers, and diarrhea by antimony (Fujihara & Nishimoto, 2020); gastrointestinal effects (nausea, vomiting, and diarrhea), liver damage, and allergic dermatitis by cobalt (Barreto et al, 2020); acute renal failure, tumor formation, and cancer by germanium (Jinhui & Kui, 1995); kidneys, reproductive system, brain, cause harmful effects on cerebral functioning, infertility, miscarriage, and hypertension by lead (Zounr et al, 2018). The determination of heavy metals in food packaging materials, especially plastics, presents various challenges due to the complexity of the matrix and the extremely low levels of concentration in which the elements are found.…”