Adsorption and attenuation behavior of 3-nitro-1,2,4-triazol-5-one (NTO) in eleven soils

Mark, Noah; Arthur, Jay; Dontsova, Katerina; Brusseau, Mark L.; Taylor, Susan

doi:10.1016/j.chemosphere.2015.09.101

Cited by 51 publications

(76 citation statements)

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“…Estimates for NTO ks ranged between 0.0004 h À1 and 0.0221 h À1 . There was a significant positive relationship between OC in soils and measured ks (Mark et al, 2016) and sterilized soils experienced smaller mass loss than same soils without sterilization suggesting microbial transformation, possibly with OC as the energy source.…”

Section: Introductionmentioning

confidence: 88%

“…They were a subset of eleven soils used for NTO batch adsorption and transformation studies by Mark et al (2016). Some of these soils had been used previously in studies of explosive and propellant formulation constituents (Dontsova et al, 2006(Dontsova et al, , 2007(Dontsova et al, , 2009a(Dontsova et al, , 2009bTaylor et al, 2012).…”

Section: Soilsmentioning

confidence: 99%

“…ATO can further transform under aerobic conditions to CO 2 , urea, and inorganic nitrogen species (Le Campion et al, 1999b;Krzmarzick et al, 2015). Mark et al (2016) conducted a series of kinetic and equilibrium batch experiments to determine first order transformation rate constants (k), K d s and Freundlich adsorption coefficients (K f s) for NTO using multiple soils with a range of properties. NTO was weakly adsorbed, with K d s ranging between 0.02 and 0.51 cm 3 g À1 .…”

Section: Introductionmentioning

confidence: 99%

“…Monod-type kinetics was implemented in HYDRUS to evaluate the occurrence of temporally dependent NTO transformation. To assess the impact of the experimental approach, transport parameters (k, transformation rate for Monod-type kinetics, and K d ) were compared to the results of the batch studies (Mark et al, 2016). This is the first study to examine transport behavior of dissolved NTO in soils.…”

Section: Introductionmentioning

confidence: 99%

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Column transport studies of 3-nitro-1,2,4-triazol-5-one (NTO) in soils

et al. 2017

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h i g h l i g h t sThis is the first study to examine transport behavior of dissolved NTO, a new IM compound. We measured adsorption, retardation and transformation of dissolved NTO in 8 soils. NTO absorption and retardation were low (K d < 1 cm 3 g À1 ).Transformation rates increased with time for high OC soils. Organic carbon and microbial activity promoted NTO transformation. a r t i c l e i n f o a b s t r a c tDevelopment of the new, insensitive, energetic compound, NTO (3-nitro-1,2,4-triazol-5-one), creates need for the data on NTO's fate and transport to predict its behavior in the environment and potential for groundwater contamination. To measure the transport of NTO in soils, we conducted miscibledisplacement experiments under steady state and interrupted flow conditions using eight soils having varying physical and geochemical properties. The breakthrough curve (BTC) data were analyzed using temporal moment analysis and simulated using HYDRUS-1D to determine transport parameters and better understand the mechanisms of sorption and transformation. Parameters determined from the miscible-displacement study were compared to results obtained from batch experiments conducted for the same soils, and examined in relation to soil properties. Column NTO linear adsorption coefficients (K d ) were low and correlated well (P ¼ 0.000049) with measurements from the batch studies. NTO transformation rate constants increased and NTO recovery decreased with increase in soil organic carbon (OC) content. Autoclaved soils had slower transformation rates and greater NTO recoveries indicating that microorganisms play a role in NTO transformation. In addition, the transformation rate increased with time in soils with higher OC. Monod-type kinetics was implemented in HYDRUS-1D to simulate the observed increase in transformation rate with time. We think this phenomenon is due to bacterial growth. Results indicate very low adsorption of NTO in a range of soils, but natural attenuation through transformation that, depending on soil OC content and hydraulic residence time, could result in complete removal of NTO.

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Section: Introductionmentioning

confidence: 88%

Section: Soilsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Column transport studies of 3-nitro-1,2,4-triazol-5-one (NTO) in soils

et al. 2017

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“…Mass balance studies evaluated the recovery of DNAN in solution and in soil for sterilized and unsterilized Catlin silt loam and Sassafras Table 2 Measured physical and chemical properties of soils used in experiments (Mark et al, 2016 loam soils equilibrated for 24 and 120 h (Fig. 1).…”

Section: Dnan Mass Balancementioning

confidence: 99%

Batch soil adsorption and column transport studies of 2,4-dinitroanisole (DNAN) in soils

Arthur

Mark

Taylor

et al. 2017

Journal of Contaminant Hydrology

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The explosive 2,4,6-trinitrotoluene (TNT) is currently a main ingredient in munitions; however the compound has failed to meet the new sensitivity requirements. The replacement compound being tested is 2,4-dinitroanisole (DNAN). DNAN is less sensitive to shock, high temperatures, and has good detonation characteristics. However, DNAN is more soluble than TNT, which can influence transport and fate behavior and thus bioavailability and human exposure potential. The objective of this study was to investigate the environmental fate and transport of DNAN in soil, with specific focus on sorption processes. Batch and column experiments were conducted using soils collected from military installations located across the United States. The soils were characterized for pH, electrical conductivity, specific surface area, cation exchange capacity, and organic carbon content. In the batch rate studies, change in DNAN concentration with time was evaluated using the first order equation, while adsorption isotherms were fitted using linear and Freundlich equations. Solution mass-loss rate coefficients ranged between 0.0002 h −1 and 0.0068 h −1 . DNAN was strongly adsorbed by soils with linear adsorption coefficients ranging between 0.6 and 6.3 L g −1 , and Freundlich coefficients between 1.3 and 34 mg 1 − n L n kg −1 . Both linear and Freundlich adsorption coefficients were positively correlated with the amount of organic carbon and cation exchange capacity of the soil, indicating that similar to TNT, organic matter and clay minerals may influence adsorption of DNAN. The results of the miscible-displacement column experiments confirmed the impact of sorption on retardation of DNAN during transport. It was also shown that under flow conditions DNAN transforms readily with formation of amino transformation products, 2-ANAN and 4-ANAN. The magnitudes of retardation and transformation observed in this study result in significant attenuation potential for DNAN, which would be anticipated to contribute to a reduced risk for contamination of ground water from soil residues.

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Tailored SiO₂‐TiO₂ Aerogel/Ag Flexible Films as Stable SERS Substrates for Hazardous Materials Detection

Liu

Wang

Zhao

et al. 2021

Adv Materials Technologies

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Flexible surface‐enhanced Raman spectroscopy (SERS) substrates have received more and more attention for their non‐invasive sample collection ability. However, majority of them have poor stability and reproducibility because noble metal is easily oxidized and led to lose SERS activity. Herein, SiO2‐TiO2‐Ag hybrids aerogel (STAHA) material is first applied as a flexible SERS substrate for explosives and dyes long‐term sensitive detection. The sensitive non‐invasive detection of 3‐nitro‐1, 2, 4‐triazol‐5‐one (NTO) residues can be achieved with a limit of 1 × 10−6 m by wiping sample collection method. Meanwhile, similar SERS sensitivity from long‐term (50 days) kept substrates is observed compared with fresh‐made substrates. This long‐term sensitivity is contributed to electronic transfer compensation from TiO2 aerogel. This proposed flexible STAHA enrich the type of SERS substrates, and their long‐term sensitivity can provide a prospective application for trace analyses of explosives and other hazardous residues in criminal forensic, military, and security check.

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Adsorption and attenuation behavior of 3-nitro-1,2,4-triazol-5-one (NTO) in eleven soils

Cited by 51 publications

References 24 publications

Column transport studies of 3-nitro-1,2,4-triazol-5-one (NTO) in soils

Column transport studies of 3-nitro-1,2,4-triazol-5-one (NTO) in soils

Batch soil adsorption and column transport studies of 2,4-dinitroanisole (DNAN) in soils

Tailored SiO₂‐TiO₂ Aerogel/Ag Flexible Films as Stable SERS Substrates for Hazardous Materials Detection

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Adsorption and attenuation behavior of 3-nitro-1,2,4-triazol-5-one (NTO) in eleven soils

Cited by 51 publications

References 24 publications

Column transport studies of 3-nitro-1,2,4-triazol-5-one (NTO) in soils

Column transport studies of 3-nitro-1,2,4-triazol-5-one (NTO) in soils

Batch soil adsorption and column transport studies of 2,4-dinitroanisole (DNAN) in soils

Tailored SiO2‐TiO2 Aerogel/Ag Flexible Films as Stable SERS Substrates for Hazardous Materials Detection

Contact Info

Product

Resources

About

Tailored SiO₂‐TiO₂ Aerogel/Ag Flexible Films as Stable SERS Substrates for Hazardous Materials Detection