Each wastewater sample was filtered through a 0.45 μm cellulose membrane, and the filtrate was collected for analysis. The hydrogen ion concentration (pH) was measured using a PHB-4 pH meter (INESA Co., Shanghai, China). The total organic carbon (TOC) content was measured using a SHIMADZU TOV-Vcph analyser (SHIMADZU Corp., Kyoto, Japan), total N (TN) was determined using the micro-Kjedahl method, and the NH4-N content was determined following the Nash reagent spectrophotometric method (SEPA, 2002) [21 ]. NO3-N and NO2-N were determined using ion chromatography (Dionex ICS-1500 Ion Chromatography System, SpectraLab Scientific Inc., Markham, ON, Canada) following methods described by SEPA (2002) [21 ]. SON was calculated by TN subtracting NH4-N, NO3-N, and NO2-N. Sulfonamides were determined using liquid chromatography–mass spectrometry/mass spectrometry (Agilent 1290-6470, Agilent, Palo Alto, CA, USA) (LCMSMS, following AOAC 2007.01) according to the methods of Li et al. (2021) [22 ].
Agilent 1290 6470
Manufactured by Agilent Technologies
Sourced in United States
The Agilent 1290-6470 is a triple quadrupole mass spectrometer designed for high-performance liquid chromatography (HPLC) applications. It provides sensitive and reliable detection of a wide range of analytes.
Automatically generated - may contain errors
Lab products found in correlation
2 protocols using agilent 1290 6470
1
Wastewater Analysis for Contaminants
2
Pesticide Residue Analysis by HPLC-MS/MS
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A high-performance
liquid chromatography–triple quadrupole mass spectrometer (Agilent
1290-6470) was purchased from Agilent Technologies (USA). A TDL-5C-PRP
high- and low-speed centrifuge was obtained from Shanghai Anting Scientific
Instrument Factory (Shanghai, China). A multitube vortex mixer (SDC-3000)
was purchased from Biocomma Limited (Shenzhen, China). All pesticide
standards were bought from Shanghai Anpel Laboratory Technologies
(Shanghai, China). The purity of each pesticide standard was 99.0%.
Octadecylsilane (C18) and primary secondary amine (PSA)
were from Shanghai Anpel Laboratory Technologies (Shanghai, China).
Sodium citrate and disodium hydrogen citrate (analytical purity) were
obtained from Sinopharm Chemical Reagent (Shanghai, China). All the
reagents used were of analytical purity or chromatographic purity,
and the experimental water was triple filtered deionized water.
liquid chromatography–triple quadrupole mass spectrometer (Agilent
1290-6470) was purchased from Agilent Technologies (USA). A TDL-5C-PRP
high- and low-speed centrifuge was obtained from Shanghai Anting Scientific
Instrument Factory (Shanghai, China). A multitube vortex mixer (SDC-3000)
was purchased from Biocomma Limited (Shenzhen, China). All pesticide
standards were bought from Shanghai Anpel Laboratory Technologies
(Shanghai, China). The purity of each pesticide standard was 99.0%.
Octadecylsilane (C18) and primary secondary amine (PSA)
were from Shanghai Anpel Laboratory Technologies (Shanghai, China).
Sodium citrate and disodium hydrogen citrate (analytical purity) were
obtained from Sinopharm Chemical Reagent (Shanghai, China). All the
reagents used were of analytical purity or chromatographic purity,
and the experimental water was triple filtered deionized water.
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