A portable analytical system for rapid on-site determination of total nitrogen in water

Zhao, Chen; Chen, Longyan; Zhong, Guowei; Wu, Qun; Liu, Jinxia; Liu, Xinyu

doi:10.1016/j.watres.2021.117410

Cited by 16 publications

(4 citation statements)

References 28 publications

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“…The excess of these compounds is excreted in the urine, and the rest is concentrated in the salivary glands [ 61 ], causing health conditions, such as methemoglobin, diabetes, cancer, and thyroid disease [ 40 , 62 ]. For this reason, the WHO has established an upper limit equal to 10 mg/L for drinking water [ 63 ].…”

Section: Chemical Fertilizer and Its Environmental Impactmentioning

confidence: 99%

Microalgae-Based Biotechnology as Alternative Biofertilizers for Soil Enhancement and Carbon Footprint Reduction: Advantages and Implications

et al. 2023

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Due to the constant growth of the human population and anthropological activity, it has become necessary to use sustainable and affordable technologies that satisfy the current and future demand for agricultural products. Since the nutrients available to plants in the soil are limited and the need to increase the yields of the crops is desirable, the use of chemical (inorganic or NPK) fertilizers has been widespread over the last decades, causing a nutrient shortage due to their misuse and exploitation, and because of the uncontrolled use of these products, there has been a latent environmental and health problem globally. For this reason, green biotechnology based on the use of microalgae biomass is proposed as a sustainable alternative for development and use as soil improvers for crop cultivation and phytoremediation. This review explores the long-term risks of using chemical fertilizers for both human health (cancer and hypoxia) and the environment (eutrophication and erosion), as well as the potential of microalgae biomass to substitute current fertilizer using different treatments on the biomass and their application methods for the implementation on the soil; additionally, the biomass can be a source of carbon mitigation and wastewater treatment in agro-industrial processes.

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Section: Chemical Fertilizer and Its Environmental Impactmentioning

confidence: 99%

Microalgae-Based Biotechnology as Alternative Biofertilizers for Soil Enhancement and Carbon Footprint Reduction: Advantages and Implications

et al. 2023

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“…Table 3 shows that the samples from the dry season contain higher TN concentrations than the samples from the wet season. Zhao et al, (2021), mentioned that TN in water consists of inorganic chemicals such as nitrate (NO3-), nitrite (NO2-), and ammonia (NH4+), as well as organic components like urea, nucleic acids, peptides, proteins, and perhaps a variety of synthetic organic compounds. Eutrophication occurs when there is an excess of nitrogen in the water.…”

Section: Total Nitrogen (Tn) Total Phosphorus (Tp) and Potassium (K)mentioning

confidence: 99%

“…Eutrophication occurs when there is an excess of nitrogen in the water. Zhao et al, (2021), excess N can easily transfer into water bodies, posing serious concerns about water quality and human health. For example, it might cause an algae bloom, a condition that uses a significant level of oxygen and thus reduces the possibilities of aquatic species surviving, causing a significant detrimental effect on the environment as well as the economy.…”

Section: Total Nitrogen (Tn) Total Phosphorus (Tp) and Potassium (K)mentioning

confidence: 99%

Determination of Nitrogen, Phosphorus and Potassium in Soil and Plant Due to Husbandry Farming in Parit Rasipan Drainage System

Miswan¹,

Hamdan²,

Azman³

et al. 2023

IJSCET

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Nutrient flow into waterways and soils has rapidly causing eutrophication, which causes ecological instability, dissolved oxygen (DO) depletion, extinction of aquatic species, and perhaps public health risks. Therefore, this study focuses on the determination of nitrogen, phosphorus, and potassium (NPK) in soil and plants in the Parit Rasipan drainage system due to the livestock farming area. The water quality of the drainage system is being monitored. Soil and plant at the study area have been collected bygrid sampling method at 4 sampling points on wet and dry seasons for N determination using APHA 4500 NORG-B and PK using US EPA 6010B (ICP OES) methods, respectively. In addition, water quality has been monitored in situ for pH, DO, and temperature by a HI 98192 HANNA multiparameter instrument, while water samples were collected and analyzed for selected parameters including total nitrogen (TN), total phosphorus (TP) using the HACH DR6000 Spectrophotometer and potassium (K) by atomic absorption spectroscopy (AAS).The results of this study show that the concentrations of TN (3380–6290 mg/kg), TP (450-820 mg / kg) and K (381–931 mg/kg) in the soil are classified as moderate to very high. Due to the high concentration, TN (5270–6870 mg/kg), TP (262-769 mg / kg) and K (10200–16200 mg/kg) concentrations in plants are also high. For water quality monitoring, the data shows (pH 6.1-6.4), (DO 0.8–1.1 mg/L), and (temperature 26.6-29.2 ̊C) both in wet and dry seasons. The concentrations of TN, TP and K (average ± s.d)concentrations in water during the wet season are (TN 43 ± 1mg/L), (TP 0.4 ± 1mg/L) and (K 3.9 ± 0.2mg/L) while during the dry season are (TN 49 ± 1mg/L), (TP 0.7 ± 1mg/L) and (K 4.2 ± 0.2mg/L). In conclusion, from the analysis of the results, the Parit Rasipan drainage system has a high level of NPK in both the wet and dry seasons due to the livestock activities in the area.

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“…Finally, we applied the optical Ag printing technique to fabrication of nanopaper-based electrochemical biosensors. Paper-based analytical devices have been widely used for low-cost disease diagnostics, [58][59][60][61] environmental monitoring, [62,63] and food testing. [64,65] Nanopaper-based devices have also been developed for optical chemical sensing [37] and biosensing.…”

Section: Demonstrations For Flexible Electronics and Biosensorsmentioning

confidence: 99%

Optical Printing of Conductive Silver on Ultrasmooth Nanocellulose Paper for Flexible Electronics

et al. 2022

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The nanofibrillated cellulose paper (nanocellulose paper or nanopaper), which is flexible, transparent, ultrasmooth, and biodegradable, has emerged as a new substrate material for the next generation of paper‐based flexible electronics. Herein a visible light‐induced printing technique for depositing highly conductive silver (Ag) patterns on nanopaper is reported. The optical Ag printing process is simple to implement at room temperature and only requires nontoxic, low‐cost aqueous chemical solutions and an inexpensive light projection setup. The abundant carboxyl groups on the nanopaper enable efficient absorption of Ag+ ions on the nanopaper surface for light‐induced reduction of Ag+ into a thin film of densely packed silver nanoparticles (AgNPs). Chemical annealing of the deposited AgNPs further enhances the conductivity of the printed Ag patterns. The mechanical and electrical properties of the printed Ag patterns on nanopaper are characterized, and the application of the optical Ag printing technique fabricating the nanopaper‐based flexible circuits and electrochemical biosensors is also demonstrated. The optical printing technique will enable new designs and applications of nanopaper‐based flexible electronics.

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A portable analytical system for rapid on-site determination of total nitrogen in water

Cited by 16 publications

References 28 publications

Microalgae-Based Biotechnology as Alternative Biofertilizers for Soil Enhancement and Carbon Footprint Reduction: Advantages and Implications

Microalgae-Based Biotechnology as Alternative Biofertilizers for Soil Enhancement and Carbon Footprint Reduction: Advantages and Implications

Determination of Nitrogen, Phosphorus and Potassium in Soil and Plant Due to Husbandry Farming in Parit Rasipan Drainage System

Optical Printing of Conductive Silver on Ultrasmooth Nanocellulose Paper for Flexible Electronics

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