Use of corn straw-derived biochar for magnetic solid-phase microextraction of organophosphorus pesticides from environmental samples

Utilization of magnetic pomelo peel‐derived biochar for extraction and liquid chromatography‐mass spectrometry determination of opioid drugs in wastewaters

“…Biochar is defined as porous carbon material produced from the pyrolytic processing of abundant biomass. It has attracted significant interest in sample preparation [13][14][15][16][17][18][19]. For example, biochar derived from pine needles or marine algae, which acted as SPME coatings, could efficiently extract polychlorinated biphenyls and chlorobenzenes from water samples [13,14].…”

“…For example, biochar derived from pine needles or marine algae, which acted as SPME coatings, could efficiently extract polychlorinated biphenyls and chlorobenzenes from water samples [13,14]. Magnetic biochars, derived from citrus and pomelo peel, straw, and bamboo, were proved to be effective enrichment materials for pesticides, pollutants, and fentanyls [15][16][17][18].…”

Solar‐light‐driven ZnO/biochar treatment of pesticides contaminated wastewater: A practical and computational study

“…Interactions of H-bonding and π-π reactivity between LM, MA, OX, and BC play the key factor in the adsorption process as well as the pore volume and surface area of BC. 44 Fan et al 33 found similar results where the adsorption rate of sulfonamides on sludge-based BCs was rapidly increased in the first reaction 80 min and then slowed down until attaining the sorption equilibrium after a contacting time of 100 min. 33 Figure 3B shows the influence of BC dose on the removal of LM, MA, and OX at pH 7.6 ± 0.3, contact time of 135 min, and initial OX, LM, and MA concentrations of 200, 145, and 100 mg/L, respectively.…”

Preparation of bamboo‐derived magnetic biochar for solid‐phase microextraction of fentanyls from urine

“…Previous studies have shown that biochar exhibited excellent performance for heavy metals and pollutants removal [14][15][16]. However, to the best of our knowledge, limited studies have been reported on the use of biochars derived from agricultural biomass in field of sample pretreatment [17][18][19][20][21][22]. For example, pine needle and Ulva lactuca biochars coated SPME fibers [17,18], Cocos nucifera QuEChERS adsorbent [19], and magnetic citrus peel biochar [20] have been developed in the enrichment of trace substances (polychlorinated biphenyls, chlorobenzenes, phthalate esters, and pesticides) from complex samples, respectively.…”

“…For example, pine needle and Ulva lactuca biochars coated SPME fibers [17,18], Cocos nucifera QuEChERS adsorbent [19], and magnetic citrus peel biochar [20] have been developed in the enrichment of trace substances (polychlorinated biphenyls, chlorobenzenes, phthalate esters, and pesticides) from complex samples, respectively. Recently, we have examined the use of magnetic straw-derived biochar for the extraction of organophosphorus pesticides from environmental samples [21].…”