Sequential determination of multi-nutrient elements in natural water samples with a reverse flow injection system

Lin, Kunning; Ma, Jian; Yuan, Dongxing; Feng, Sichao; Su, Haitao; Huang, Yongming; Shangguan, Qipei

doi:10.1016/j.talanta.2017.01.063

Cited by 17 publications

(9 citation statements)

References 27 publications

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“…The ascorbic acid (AA) concentration was 100 g L −1 and prepared daily. 39 The molybdate and AA reagents were separately injected into different capsules. The reagents in capsules could adequately react with most water samples with phosphate concentration up to 1.00 mg/L collected in the reservoir (2.4 mL).…”

Section: ■ Materials Device and Methodsmentioning

confidence: 99%

“…The ammonium molybdate stock solution (14 g L –1 ), was prepared by dissolving 3.5 g of (NH 4 ) 6 Mo 7 O 24 ·4H 2 O in 125 mL of 5.52 mol L –1 H 2 SO 4 (Guarantee grade) solution, then adding 0.075 g of potassium antimony tartrate, and diluting to 1 L. The solution was kept in a brown bottle. The ascorbic acid (AA) concentration was 100 g L –1 and prepared daily …”

Section: Materials Device and Methodsmentioning

confidence: 99%

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Low-Cost Automatic Sensor for in Situ Colorimetric Detection of Phosphate and Nitrite in Agricultural Water

Lin

et al. 2018

ACS Sens.

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This study proposed a low-cost sensor for in situ automatic monitoring of phosphate and nitrite in agricultural water environments, involving a series of “Fish-Bite” reservoirs, multiple reagent capsules, and a colorimetric sensor. The Fish-Bite reservoir is an alternative to the pumps, valves, and filters that are widely used for water sample collection and also offers a closed cell for chromogenic reactions afterward. Up to two capsules can be embedded in each reservoir to support chromogenic reactions that use two different reagents in sequence. From the results of calibration tests in the laboratory, the limit of detection was found to be approximately 0.01 mg/L for both phosphate and nitrite, with a linear range of 0.01–1.00 mg/L for phosphate and 0.01–0.20 mg/L for nitrite. Furthermore, an in situ experiment was successfully carried out in an irrigation canal beside farmland to demonstrate the practicability and robustness of the device. The averaged concentrations of phosphate and nitrite were 0.0113 mg/L and 0.0383 mg/L, respectively. The relative deviations were 20.2% and 11.7%, respectively, referred to results obtained by using the standard spectrophotometric methods. With the advantages of being robust, fast, and low cost, this in situ device is promising for the formation of agricultural sensor networks.

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Section: ■ Materials Device and Methodsmentioning

confidence: 99%

Section: Materials Device and Methodsmentioning

confidence: 99%

Low-Cost Automatic Sensor for in Situ Colorimetric Detection of Phosphate and Nitrite in Agricultural Water

Lin

et al. 2018

ACS Sens.

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“…Giakisikli et al 129 reported on the integrated SIA for determination of ammonium in recycled water produced on a board in a manned space mission because SIA provided the specifications for fully on-line monitoring in under the space condition. Next, Lin and co-workers 130 described the automatic and sequential determination of multinutrient elements in natural water samples. They received a high sample throughput and can be applied for various kinds of samples.…”

Section: Application Of Flow-based System For Environmental Monitoringmentioning

confidence: 99%

Flow-based System: A Highly Efficient Tool Speeds Up Data Production and Improves Analytical Performance

et al. 2020

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In this review, we cite references from the period between 2015 and 2020 related to the use of a flow-based system as a tool to obtain a modern analytical system for speeding up data production and improving performance. Based on a great deal of concepts for automatic systems, there are several research groups introduced in the development of flow-based systems to increase sample throughput while retaining the reproducibility and repeatability as well as to propose new platforms of flow-based systems, such as microfluidic chip and paper-based devices. Additionally, to apply a developed system for on-site analysis is one of the key features for development. We believe that this review will be very interested and useful for readers because of its impact on developing novel analytical systems. The content of the review is categorized following their applications including quality control and food safety, clinical diagnostics, environmental monitoring and miscellaneous.

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“…To date, many techniques have been developed for the detection of nitrite, including chromatography [ 10 , 11 ], UV spectrophotometry [ 12 , 13 ], fluorometry [ 14 , 15 ], and flow injection analysis [ 16 , 17 ]. Although these analytical methods are well-recognized, they also suffered from limits, such as high cost, being time-consuming, cumbersome, and requiring complicated pretreatment.…”

Section: Introductionmentioning

confidence: 99%

Ultrasensitive Electrochemical Sensor Based on Polyelectrolyte Composite Film Decorated Glassy Carbon Electrode for Detection of Nitrite in Curing Food at Sub-Micromolar Level

et al. 2018

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To ensure food quality and safety, developing cost-effective, rapid and precision analytical techniques for quantitative detection of nitrite is highly desirable. Herein, a novel electrochemical sensor based on the sodium cellulose sulfate/poly (dimethyl diallyl ammonium chloride) (NaCS/PDMDAAC) composite film modified glass carbon electrode (NaCS/PDMDAAC/GCE) was proposed toward the detection of nitrite at sub-micromolar level, aiming to make full use of the inherent properties of individual component (biocompatible, low cost, good electrical conductivity for PDMDAAC; non-toxic, abundant raw materials, good film forming ability for NaCS) and synergistic enhancement effect. The NaCS/PDMDAAC/GCE was fabricated by a simple drop-casting method. Electrochemical behaviors of nitrite at NaCS/PDMDAAC/GCE were investigated by cyclic voltammetry (CV) and differential pulse voltammetry (DPV). Under optimum conditions, the NaCS/PDMDAAC/GCE exhibits a wide linear response region of 4.0 × 10−8 mol·L−1~1.5 × 10−4 mol·L−1 and a low detection 1imit of 43 nmol·L−1. The NaCS/PDMDAAC shows a synergetic enhancement effect toward the oxidation of nitrite, and the sensing performance is much better than the previous reports. Moreover, the NaCS/PDMDAAC also shows good stability and reproducibility. The NaCS/PDMDAAC/GCE was successfully applied to the determination of nitrite in ham sausage with satisfactory results.

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Sequential determination of multi-nutrient elements in natural water samples with a reverse flow injection system

Cited by 17 publications

References 27 publications

Low-Cost Automatic Sensor for in Situ Colorimetric Detection of Phosphate and Nitrite in Agricultural Water

Low-Cost Automatic Sensor for in Situ Colorimetric Detection of Phosphate and Nitrite in Agricultural Water

Flow-based System: A Highly Efficient Tool Speeds Up Data Production and Improves Analytical Performance

Ultrasensitive Electrochemical Sensor Based on Polyelectrolyte Composite Film Decorated Glassy Carbon Electrode for Detection of Nitrite in Curing Food at Sub-Micromolar Level

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