DOC was monitored using a TOC/DOC analyzer (Shimadzu TOC-L, Kyoto, Japan). Ammonium was measured with gas-diffusion flow injection (Foss, Hillerød, Demark) or Hach Lange kits (LCK 304, Hach, Loveland, Colorado, USA). Nitrite, nitrate and chloride were measured by ion chromatography (Metrohm 881, Herisau, Switzerland). Free and combined chlorine were measured using Hach Lange kits based on the DPD (N,N-diethyl-p-phenylenediamine) method (LCK 310, Hach).
Lck 310
Manufactured by HACH
Sourced in Germany
The LCK 310 is a cuvette test for the determination of phosphate in water and wastewater samples. It is designed to measure phosphate concentrations within a specific measurement range.
Automatically generated - may contain errors
Lab products found in correlation
4 protocols using lck 310
1
Wastewater Monitoring via Analytical Methods
2
Chlorine Concentration Measurement Protocol
Check if the same lab product or an alternative is used in the 5 most similar protocols
+ Expand
Chlorine measurements were performed on grab samples taken 10, 20, 35, 40, 45, 50, 55, and 60 min after the start of the experiment (Figure 1B ). The chlorine concentrations were measured with a N,N-diethyl-p-phenylenediamine (DPD) colorimetric kit (Hach-Lange LCK 310, Germany) and a bench top spectrophotometer (Hach-Lange DR3900, Germany). After reading a blank sample, water samples were added to reagent-containing cuvettes and incubated for 1 min. The resulting intensity of red color was proportional to the chlorine concentration. The kit has a linear range of 0.05–2 mg l-1 and an accuracy of ±3%.
3
Analytical Methods for Organic Contaminants
Check if the same lab product or an alternative is used in the 5 most similar protocols
+ Expand
Target organic contaminants were analyzed with a 5500 QTRAP hybrid triple quadrupolelinear ion trap mass spectrometer with a turbo Ion Spray source (Applied Biosystems), coupled to a Waters Acquity Ultra-Performance TM liquid chromatograph (Milford) . The details of the target analytical method are given in Text S3 and Table S1. Free chlorine and ozone were measured in the presence and absence of 20 mM NaCl, respectively, immediately after sampling and using a diethyl-p-phenylene diamine (DPD) colorimetric method, i.e., Chlorine/Ozone/Chlorine dioxide cuvette tests LCK 310 (Hach Lange Spain Sl). The detection limit for the measurement of free chlorine (HOCl/OCl -) using the DPD method was 0.05 mg L -1 . Chloride, chlorate and perchlorate were measured by high-pressure ion chromatography (HPIC) using a Dionex ICS-5000 HPIC system. The quantification limits for the measurements of Cl -, ClO3 -and ClO4 -were 0.025 mg L -1 , 0.015 mg L -1 and 0.004 mg L -1 , respectively.
Hydrogen peroxide (H2O2) was measured by a spectrophotometric method using 0.01 M copper (II) sulphate solution and 0.1% w/v 2,9 dimethyl -1,10 -phenanthroline (DMP) solution, based on the formation of Cu(DMP) + 2 cation, which shows an absorption maximum at 454 nm (Baga et al. 1988) (link).
Hydrogen peroxide (H2O2) was measured by a spectrophotometric method using 0.01 M copper (II) sulphate solution and 0.1% w/v 2,9 dimethyl -1,10 -phenanthroline (DMP) solution, based on the formation of Cu(DMP) + 2 cation, which shows an absorption maximum at 454 nm (Baga et al. 1988) (link).
4
Formation Potential of Disinfection By-Products
Check if the same lab product or an alternative is used in the 5 most similar protocols
+ Expand
Batch disinfection formation potential tests with coarse-filtered Llobregat surface water samples were performed in 250 ml sealed bottles, with no head-space, in an incubator (25 ± 1 • C) for 24 h. The chlorine dose was adjusted to obtain a free chlorine residual of 1-3 mg/l after the reaction. Free chlorine was individually checked for all the tests after 24 h, using a photometric test kit LCK 310 (Hach Lange GmbH, Germany). Then, samples were quenched with ~500 μM Na 2 SO 3 (≥98.0%, BioUltra grade) and extracted for injection in the LC-HRMS.
A procedural blank consisting on ultrapure water was chlorinated, incubated, and analysed following the same experimental procedure.
A procedural blank consisting on ultrapure water was chlorinated, incubated, and analysed following the same experimental procedure.
About PubCompare
Our mission is to provide scientists with the largest repository of trustworthy protocols and intelligent analytical tools, thereby offering them extensive information to design robust protocols aimed at minimizing the risk of failures.
We believe that the most crucial aspect is to grant scientists access to a wide range of reliable sources and new useful tools that surpass human capabilities.
However, we trust in allowing scientists to determine how to construct their own protocols based on this information, as they are the experts in their field.
Ready to get started?
Sign up for free.
Registration takes 20 seconds.
Available from any computer
No download required
Revolutionizing how scientists
search and build protocols!