4,5-Dihydroxy-3-(p-sulfophenylazo)-2,7-naphthalenedisulfonic Acid, Trisodium Salt

2021 ◽  
Keyword(s):  
Trisodium Salt

Effects of NTA on the Fate of Heavy Metals in Sediments

1993 ◽  
Vol 28 (8-9) ◽  
pp. 191-194 ◽  
Author(s):  
S. L. Lo ◽  
L. J. Huang
Keyword(s):  
Heavy Metals ◽  
Sodium Tripolyphosphate ◽  
Equilibrium Concentration ◽  
Chelating Agent ◽  
Metal Species ◽  
Pollution Problem ◽  
Trisodium Salt ◽  
Major Factors ◽  
Apparent Equilibrium ◽  
Degradation Time

Sodium tripolyphosphate (STPP), which is widely used as a builder in synthetic detergents, was found as one of the major factors of eutrophication in rivers and lakes. Many countries have used nitrilotriacetate (NTA) in detergents to replace STPP, but it induced another pollution problem. Because NTA is an effective chelating agent, it will dissolve heavy metals from the sediments and affect the fate of metal species in rivers. The purpose of this study is to investigate the effect of the mobilization of heavy metals from sediments by NTA. The experimental results indicated that NTA increases the mobilization of heavy metals as the shaking time increases and reaches an apparent equilibrium concentration after 24–48 hours. Typical results show that using 20mg/l of NTA and shaking time of 6 days, the fraction mobilized is about 8 to 15% for Cu, 1 to 7% for Zn, 7 to 10% for Pb, and 7 to 30% for Cd. Hardness of the water affects the formation of heavy metal-NTA complexes significantly. Biodegradation of the trisodium salt of NTA starts after 6–9 days with degradation time of the metal-NTA complexes decreasing in the order of Cu > Cd > Zn > Pb > Ca.

Amorphous magnesium phosphate flower-like hierarchical nanostructures: microwave-assisted rapid synthesis using fructose 1,6-bisphosphate trisodium salt as an organic phosphorus source and application in protein adsorption

RSC Advances ◽  
2015 ◽  
Vol 5 (19) ◽  
pp. 14906-14915 ◽  
Author(s):  
Chao Qi ◽  
Ying-Jie Zhu ◽  
Bing-Qiang Lu ◽  
Jin Wu ◽  
Feng Chen
Keyword(s):  
Organic Phosphorus ◽  
Magnesium Phosphate ◽  
Rapid Synthesis ◽  
Hierarchical Nanostructures ◽  
Microwave Assisted ◽  
Microwave Hydrothermal ◽  
Microwave Hydrothermal Method ◽  
Phosphorus Source ◽  
Trisodium Salt ◽  
Fructose 1,6 Bisphosphate

Amorphous magnesium phosphate flower-like hierarchical nanostructures are synthesized using fructose 1,6-bisphosphate trisodium salt by the microwave hydrothermal method.

Investigation of the process of processing blackcurrant and cranberry alcoholic juices with trisodium salt of nitrilotrimethylphosphonic acid

2021 ◽  
pp. 41-43
Author(s):  
Светлана Семеновна Морозова ◽  
Ирина Михайловна Абрамова ◽  
Наталья Евгеньевна Головачёва ◽  
Любовь Павловна Галлямова ◽  
Наталья Александровна Шубина
Keyword(s):  
Food Additives ◽  
Customs Union ◽  
Safety Requirements ◽  
Trisodium Salt ◽  
Processing Aids ◽  
Technical Regulations

На основании проведенных исследований установлено, что обработка черносмородинового и клюквенного спиртованных соков нитрилотриметилфосфоновой кислотой позволяет снизить концентрацию железа до нормы, установленной требованиями ТР ТС 029/2012 «Требования безопасности пищевых добавок, ароматизаторов и технологических вспомогательных средств» - не более 10 мг/дм, и повысить прозрачность спиртованных соков. Based on the conducted studies, it was found that the treatment of blackcurrant and cranberry alcoholic juices with nitrilotrimethylphosphonic acid reduces the concentration of iron to the norm established by the requirements of Customs Union Technical Regulations «Safety requirements of food additives, flavorings and processing aids» (CU TR 029/2012) - no more than 10 mg/dm and increases the transparency of alcoholic juices.

scholarly journals Positive feedback between retinoic acid and 2-phospho-L-ascorbic acid trisodium salt during somatic cell reprogramming

2020 ◽  
Vol 9 (1) ◽  
Author(s):  
Mengdan Zhang ◽  
Qian Li ◽  
Tingting Yang ◽  
Fei Meng ◽  
Xiaowei Lai ◽  
...  
Keyword(s):  
Ascorbic Acid ◽  
Retinoic Acid ◽  
Positive Feedback ◽  
Dehydroascorbic Acid ◽  
Rna Seq ◽  
Somatic Cell Reprogramming ◽  
Trisodium Salt ◽  
Induced Pluripotent ◽  
High Level ◽  
Mesenchymal Epithelial Transition

AbstractRetinoic acid (RA) and 2-phospho-L-ascorbic acid trisodium salt (AscPNa) promote the reprogramming of mouse embryonic fibroblasts to induced pluripotent stem cells. In the current studies, the lower abilities of RA and AscPNa to promote reprogramming in the presence of each other suggested that they may share downstream pathways at least partially. The hypothesis was further supported by the RNA-seq analysis which demonstrated a high-level overlap between RA-activated and AscPNa activated genes during reprogramming. In addition, RA upregulated Glut1/3, facilitated the membrane transportation of dehydroascorbic acid, the oxidized form of L-ascorbic acid, and subsequently maintained intracellular L-ascorbic acid at higher level and for longer time. On the other hand, AscPNa facilitated the mesenchymal-epithelial transition during reprogramming, downregulated key mesenchymal transcriptional factors like Zeb1 and Twist1, subsequently suppressed the expression of Cyp26a1/b1 which mediates the metabolism of RA, and sustained the intracellular level of RA. Furthermore, the different abilities of RA and AscPNa to induce mesenchymal-epithelial transition, pluripotency, and neuronal differentiation explain their complex contribution to reprogramming when used individually or in combination. Therefore, the current studies identified a positive feedback between RA and AscPNa, or possibility between vitamin A and C, and further explored their contributions to reprogramming.

EDTA-Na3functionalized Fe3O4nanoparticles: grafting density control for MRSA eradication

2019 ◽  
Vol 48 (19) ◽  
pp. 6588-6595
Author(s):  
Palash Kumar Manna ◽  
Rachel Nickel ◽  
Jie Li ◽  
Yaroslav Wroczynskyj ◽  
Song Liu ◽  
...  
Keyword(s):  
Ligand Exchange ◽  
Density Control ◽  
Grafting Density ◽  
Synthesis Strategy ◽  
Trisodium Salt ◽  
Post Synthesis

We report a synthesis strategy to simplify often cumbersome post-synthesis ligand exchange protocols and use that approach to synthesize EDTA-Na3(N-(trimethoxysilylpropyl)ethylenediaminetriacetate, trisodium salt) functionalized hydrophilic and biocompatible Fe3O4nanoparticles.

scholarly journals Synergistic Passivation of Fly Ash and TMT on Heavy Metals in Sewage Sludge

2018 ◽  
Vol 10 (12) ◽  
pp. 4731 ◽  
Author(s):  
Dong-Fang Wang ◽  
Shi-He Li ◽  
Xian-Qing Wang ◽  
Ling-Xu Li ◽  
Xuan Zhang
Keyword(s):  
Heavy Metals ◽  
Adverse Effect ◽  
Fly Ash ◽  
Sewage Sludge ◽  
Ion Exchange ◽  
Growth Process ◽  
Trisodium Salt ◽  
Treatment And Disposal ◽  
Chinese Standard ◽  
Ryegrass Growth

Large amounts of fly ash and sewage sludge are produced annually in China. The treatment and disposal of such byproducts have become urgent problems that need to be solved. In order to achieve the possibility of realizing land applications for sewage sludge, fly ash and trimercapto-s-triazine trisodium salt (TMT) were used as immobilizing agents, and their passivation effects on four kinds of heavy metals (Cu, Ni, Pb, and Zn) were evaluated. The results showed that the resulting sewage sludge met Chinese standard GB/T23486-2009. When the addition was 10–20% fly ash or 0.4–0.6% TMT, the optimum immobilization effect was obtained. The synergistic passivation of 20% fly ash +0.5% TMT was superior to that of either fly ash or TMT alone. The addition of sewage sludge during the ryegrass growth process significantly increased the plant height, the number of tillers, the chlorophyll content, and the biomass of the ryegrass over the brown soil. The adverse effect of the heavy metals on the ryegrass growth could be alleviated by the passivation effect of fly ash and TMT. The immobilization performance of the fly ash was mainly due to the formation of precipitation and the ion exchange, while that of TMT was due to chelate precipitation.

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