نتایج جستجو برای: ppcps
تعداد نتایج: 204 فیلتر نتایج به سال:
Aquatic ecological problems caused by pharmaceutical and personal care products (PPCPs) are increasingly becoming an issue of concern. In this study, the seasonal spatial occurrence environmental risk 20 PPCPs were studied at 19 sampling points in surface waters Lianjiang River basin (southern China); its watershed is about 10,100 km2. Sample preparation was performed using solid-phase extracti...
The removal of four pharmaceuticals and personal care products (PPCPs), namely diethyltoluamide (DEET), paracetamol (PAR), caffeine (CAF) triclosan (TCS) (at a spiked concentration 25 μg/L), from natural water using the photo (UVC)-Fenton (powdered zero-valent iron, pZVI) process was investigated. results show that molar ratio H2O2/pZVI 2.0, pZVI 22.4 mg/L pH 3.0 maximised target compounds at 7...
• A comparison of three different analytical proposals for the analysis PPCPs in sewage sludge was presented. clean-up step essentially preceded by extraction technique UAE. direct injection UAE extract with no prior LC-MS/MS provided best performance. The resulting method validated and successfully applied dewatered digested samples. Acetaminophen reported concentrations above 1,000 ng g −1. T...
Emerging contaminants (ECs) are chemical compounds commonly present in water. It is only recently that this family of compounds is being recognized as significant water pollutants (Czech and Ribinowska, 2013). ECs include a wide variety of chemicals such as pharmaceutical and personal care products (PPCPs), pesticides, hydrocarbons and hormones, among others, that once released into the environ...
Prestressed, precast concrete piles using High-Strength Steel Strands (PPCPs HSSS) are a new type of pile. Compared with prestressed high-strength (PHC) piles, the adoption ultra-high-strength and HSSS not only improves load-bearing capacity, but also enhances ductility piles. The engineering application PPCPs requires high bearing capacity pile segments, reliable splicing to ensure cooperation...
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