scholarly journals Measurement of nitrogen dioxide concentration in cold and warm seasons using a passive sampling method

Biologija ◽  
2014 ◽  
Vol 59 (4) ◽  
Author(s):  
Dovilė Laurinavičienė ◽  
Audrius Dėdelė
Keyword(s):  
Nitrogen Dioxide ◽  
Passive Sampling ◽  
Sampling Method

Atmospheric Concentrations of Sulfur Dioxide and Nitrogen Dioxide in China and Korea Measured by Using the Improved Passive Sampling Method

2001 ◽  
pp. 1505-1510 ◽  
Author(s):  
Munehiro Warashina ◽  
Masanobu Tanaka ◽  
Yoshio Tsujino ◽  
Tuguo Mizoguchi ◽  
Siro Hatakeyama ◽  
...  
Keyword(s):  
Sulfur Dioxide ◽  
Nitrogen Dioxide ◽  
Passive Sampling ◽  
Sampling Method ◽  
Atmospheric Concentrations

scholarly journals Development of passive sampler POCIS for the analysis of polar pesticides in surface water

2015 ◽  
Vol 18 (2) ◽  
pp. 132-144
Author(s):  
Trang Thi Nhu Tran ◽  
Ty Thi Pham ◽  
Hai Lam Son Truong
Keyword(s):  
Surface Water ◽  
Environmental Factors ◽  
Pesticide Residues ◽  
Passive Sampling ◽  
Sampling Method ◽  
Passive Sampler ◽  
Polar Pesticides ◽  
Sampling Process ◽  
European Standards ◽  
First Time

The first time in Vietnam a passive sampling method has been developed to analyse the polar pesticides in surface water. The initial investigations of POCIS were performed for 7 polar pesticides as simazine,thiodicarb, carbofuran, chlortoluron, atrazine, isoproturon, and diuron. We determined the sampling rates RS for these substances ranged from 0.369 to 0.962 L day- 1. The obtained values of ku and RS showed the important influence of environmental factors such as flow on the ability to integrate polar pesticides in passive sampling process. This method can be applied to determine these 7 polar pesticides in surface water at trace levels according to European standards for pesticide residues in water (< 0.1 μg L-1).

scholarly journals A new method based on diffusive gradients in thin films for in situ monitoring microcystin-LR in waters

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Lei Yao ◽  
Alan D. Steinman ◽  
Xiang Wan ◽  
Xiubo Shu ◽  
Liqiang Xie
Keyword(s):  
Thin Films ◽  
Passive Sampling ◽  
Sampling Method ◽  
Binding Capacity ◽  
Accurate Method ◽  
In Situ Monitoring ◽  
Active Sampling ◽  
Binding Agent ◽  
Diffusive Gradients

AbstractThe passive sampling method of diffusive gradients in thin-films (DGT) was developed to provide a quantitative and time-integrated measurement of microcystin-LR (MC-LR) in waters. The DGT method in this study used HLB (hydrophilic-lipophilic-balanced) material as a binding agent, and methanol as an eluent. The diffusion coefficient of MC-LR was 5.01 × 10−6 cm2 s−1 at 25 °C in 0.45 mm thick diffusion layer. This DGT method had a binding capacity of 4.24 μg per binding gel disk (3.14 cm2), ensuring sufficient capacity to measure MC-LR in most water matrices. The detection limit of HLB DGT was 0.48 ng L−1. DGT coupled to analysis by HPLC appears to be an accurate method for MC-LR monitoring. Comparison of DGT measurements for MC-LR in water and a conventional active sampling method showed little difference. This study demonstrates that HLB-based DGT is a useful tool for in situ monitoring of MC-LR in fresh waters.

scholarly journals Passive Sampling Method for Total Volatile Organic Compounds in Indoor Air

2018 ◽  
Vol 21 (1) ◽  
pp. 41-49
Author(s):  
Takahiro ISHIZAKA ◽  
Ayato KAWASHIMA ◽  
Naoki HISHIDA ◽  
Noriaki HAMADA
Keyword(s):  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
Indoor Air ◽  
Passive Sampling ◽  
Sampling Method ◽  
Total Volatile ◽  
Volatile Organic ◽  
Total Volatile Organic Compounds

Evaluation of ogawa passive sampling devices as an alternative measurement method for the nitrogen dioxide annual standard in El Paso, Texas

2006 ◽  
Vol 124 (1-3) ◽  
pp. 211-221 ◽  
Author(s):  
Mark E. Sather ◽  
E. Terrence Slonecker ◽  
Johnson Mathew ◽  
Hunter Daughtrey ◽  
Dennis D. Williams
Keyword(s):  
Nitrogen Dioxide ◽  
Measurement Method ◽  
Passive Sampling ◽  
El Paso ◽  
Alternative Measurement
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