Comparison of silica-based materials for organophosphorus pesticides sampling and occupational risk assessment

Fast Microwave‐Assisted Synthesis, Calcination and Functionalization of a Silica Mesoporous Nanomaterial: UVM‐7

“…[23] This organization favor the mass-transfer processes inside UVM-7 silicas which improve their applicability. [24][25][26] Despite microwaves hugely increase reaction rates, the overall process of a microwave-assisted syntheses containing a microwave assisted step is not always as fast as they are supposed to be. In most cases, microwave irradiation is only applied to one step of the whole synthesis process, [27,28] and there are only a few examples of MW applied to the extraction of the template, [29][30][31] but no references of calcination processes for porous silicas (Although MW have been used as a calcination method in processes that involve phase changes in other systems).…”

“…The most outstanding feature concerning these materials is their very open architecture based on a continuous network constructed from covalently bonded pseudo‐spherical mesoporous primary nanoparticles whose aggregation defines a non‐ordered secondary system of large textural pores [23] . This organization favor the mass‐transfer processes inside UVM‐7 silicas which improve their applicability [24–26] . Despite microwaves hugely increase reaction rates, the overall process of a microwave‐assisted syntheses containing a microwave assisted step is not always as fast as they are supposed to be.…”

Application of a needle trap device packed with a MIP@MOF nano-composite for efficient sampling and determination of airborne diazinon pesticide

“… 66 Also, in another study, LOD and LOQ values for sampling organophosphate pesticides from the air were reported to be 0.07 and 0.2 μg m −3 , respectively. 9 The proposed method in this study was compared with the other reported methods which are shown in Table 4 .…”

“…So, sampling and determination of them require selective, sensitive, and reliable methods. 9 The National Institute for Occupational Safety and Health (NIOSH 5600) has proposed a sorbent tube containing XAD-2, followed by gas chromatography for sampling and analysis of organophosphate pesticides in the air. 10,11 But, the various disadvantages such as multi-step sample preparation and use of the organic solvents for analyte extraction because of the expensive, toxic and carcinogenic reasons should be considered.…”

Airborne Pesticides—Deep Diving into Sampling and Analysis

“…When it comes to adsorbents for capturing gases, several materials have been employed. Polymeric phases such as polytetrafluoroethylene membranes (PTFE) [13], Tenax TA [65], XAD ® -2 resins [66], XAD-4 [67], and PUF [67] have been used. Among these, XAD ® -2 resins, which are hydrophobic copolymers of styrene-divinylbenzene resin, are widely preferred due to their high efficiency in trapping various types of herbicides, fungicides, and insecticides.…”