INTERNATIONAL JOURNAL OF ENVIRONMENTAL ANALYTICAL CHEMISTRY
·
2013
·
IF 1.24
Meiling Wang,Jing Zhang,Nini Ding,Zhidong Chen
In this work, a sensitive and simple method was first developed for electrochemical determination of Ponceau 4R (E 124) based on an expanded graphite paste electrode (EGPE) by the square-wave stripping voltammetry (SWSV) method. The EGPE displayed good analytical performance for the measurement of Ponceau 4R. Under the optimum experimental conditions, Ponceau 4R could be linearly detected in the wide concentration range of 1.0 × 10−8 to 3.0 × 10−6 M, with a detection limit down to around 6.3 × 10−9 M at signal to noise ratio of 3:1. The developed method was successfully applied to the determination of Ponceau 4R in food samples with satisfying results and the results agreed with those from the high performance liquid chromatography (HPLC).
研究领域:
分析化学
·
食品安全
✓ 已验证
DOI
高影响因子
FOOD CHEMISTRY
·
2014
·
IF 3.259
Jing Zhang,Meiling Wang,Chao Shentu,Wenchang Wang,Zhidong Chen
A sensitive and convenient electrochemical method was developed for the simultaneous determination of the isomers of Ponceau 4R and Amaranth by an expanded graphite paste electrode (EGPE). The EGPE was prepared by mixing EG with solid paraffin. Compared with flake graphite paste and carbon paste electrodes, the EGPE showed higher electrocatalytic activity towards the oxidization of Ponceau 4R and Amaranth. Under optimal experimental conditions, the EGPE exhibited wide linear responses to Ponceau 4R and Amaranth ranging from 6 × 10 −8 to 4 × 10 −6 mol/L and 8 × 10 −8 to 4 × 10 −6 mol/L, respectively, and the detection limits for Ponceau 4R and Amaranth were 2 and 36 nmol/L, respectively, at a signal-to-noise ratio of 3. The EGPE showed good reproducibility, stability and reusability. The proposed method was successfully applied in the detection of Ponceau 4R and Amaranth in grape juice samples.
研究领域:
分析化学
·
食品科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
·
2014
·Vol. 161
·期 9
·H453
·
IF 2.859
Jing Zhang,Xue Wang,Shibo Zhang,Wenchang Wang,Masashi Hojo,Zhidong Chen
A novel electrochemical sensing platform was designed for simultaneous determination of Ponceau 4R and Tartrazine using an ionic liquid modified expanded graphite paste electrode (IL-EGPE). The IL-EGPE was prepared by mixing ionic liquid-expanded graphite composite (IL-EG) with solid paraffin. Based on the advantageous functions of IL and EG, IL-EGPE showed excellent electrocatalytic activity toward the simultaneous oxidation of Ponceau-4R and Tartrazine. Due to the electrocatalytic activity to Ponceau-4R and Tartrazine, a sensor for Ponceau-4R and Tartrazine was constructed based on IL-EGPE. Under optimal experimental conditions, the designed sensor exhibited wide linear responses to Ponceau 4R and Tartrazine ranging from 1.0 × 10−8 to 5.0 × 10−6 mol/L and 1.0 × 10−8 to 2.0 × 10−6 mol/L, respectively. The detection limits for Ponceau 4R and Tartrazine were 1.4 × 10−9 mol/L (0.85 ng/mL) and 3.0 × 10−9 mol/L (1.6 ng/mL) at a signal-to-noise ratio of 3, respectively. This sensor showed good reproducibility, stability and reusability. The proposed sensor was successfully applied in the simultaneous determination of Ponceau-4R and Tartrazine in soft drink with satisfactory results.
研究领域:
分析化学
·
材料科学
✓ 已验证
DOI
高影响因子
MICROCHIMICA ACTA
·
2024
·Vol. 191
·期 7
·1-11
·
IF 5.3
Li Junhong,Huang Hui,Xie Shuqian,Zhang Huan,Huang Xinyu,Yue Ruirui,Xu Jingkun,Duan Xuemin
A promising electrochemical sensing platform for the detection of ponceau 4R in food has been fabricated based on the carboxylated graphene oxide (GO-COOH), metal–organic framework (MOF) UIO-66-NH 2 , and poly (3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS). To this end GO-COOH was covalently coupled with UIO-66-NH 2 through amide reaction, endowing the material (GO-CONH-UIO-66) unique hierarchical pores and high chemical stability and as a result improving the conductivity of MOF and the dispersion of GO. After the addition of PEDOT:PSS into GO-CONH-UIO-66, the continuity and conductivity of the composite (PEDOT:PSS/GO-CONH-UIO-66) have been further enhanced, due to the high conductivity, favorable film-forming, and hydrophilic properties of PEDOT:PSS. Systematic electrochemical experiments confirm that the PEDOT:PSS/GO-CONH-UIO-66/GCE shows satisfactory electrochemical sensing properties towards the detection of ponceau 4R, with a wide linear detection range of 0.01–30 μM, a low limit of detection of 3.33 nM, and a high sensitivity of 0.606 μA μM −1 cm −2 . The PEDOT:PSS/GO-CONH-UIO-66 sensing platform was successfully used to detect ponceau 4R in beverage, and the detection results were compared with high-performance liquid chromatography. As a result, the PEDOT:PSS/GO-CONH-UIO-66 composite shows a promising application prospect for rapid detection of ponceau 4R in food and will play significant role in food safety detection and supervision. Graphical Abstract
研究领域:
分析化学
·
食品科学
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF ENVIRONMENTAL ANALYTICAL CHEMISTRY
·
2015
·
IF 1.295
Jing Zhang,Shibo Zhang,Xue Wang,Wenchang Wang,Zhidong Chen
A convenient and sensitive method was developed for the simultaneous determination of Ponceau-4R and Allura Red using an ionic liquid modified expanded graphite paste electrode (IL-EGPE). The IL-EGPE was prepared by mixing ionic liquid-expanded graphite (IL-EG) composites with solid paraffin. Based on the advantageous functions of IL and EG, IL-EGPE showed enhanced electrocatalytic activity towards the simultaneous oxidation of Ponceau-4R and Allura Red. Under optimal experimental conditions, the IL-EGPE exhibited wide linear responses to Ponceau-4R and Allura Red ranging from 6.0 to 7.5 mg L−1 and 5.0 to 0.5 mg L−1, respectively. The detection limits for Ponceau-4R and Allura Red were 1.15 and 0.89 μg L−1 at a signal-to-noise ratio of 3, respectively. The designed electrode showed good reproducibility, stability and reusability. The proposed method was successfully applied in the simultaneous determination of Ponceau-4R and Allura Red in soft drinks. This method presented a simple, rapid and sensitive platform for simultaneous determination of Ponceau-4R and Allura Red and would become a versatile and powerful tool for food safety.
研究领域:
分析化学
·
食品安全
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF FOOD COMPOSITION AND ANALYSIS
·
2022
·
IF 4.52
Yanping Wei,Yiyong Wu,Jinxia Feng,Jun Liu,Yaling Tian,Jingyun Xiao,Quanguo He
The novel binary metal oxide cerium molybdate (Ce 2 Mo 3 O 13 ) as a promising strategy can be combined with MWCNTs for the development of ultrasensitive sensors. Herein, a pod-like Ce 2 Mo 3 O 13 was prepared, characterized, and used to construct a molecularly imprinted sensor (MIPs) for detection of ponceau 4 R as low as to nanomolar concentration. The results demonstrate that the electrochemical response at the specific hybridized electrode of MIPs/Ce 2 Mo 3 O 13 -MWCNTs/GCE is stronger than non-molecularly imprinted ones (NIPs). It indicates a synergistic effect resulting from the hybridized Ce 2 Mo 3 O 13 -MWCNTs combination and modification to the electrode. Under optimal conditions, the calibration curve is in the range of 10 nmol L −1 to 1 μmol L −1 , with a limit of detection of 7 nmol L −1 for ponceau 4 R determination. The excellent sensitivity, reproducibility, and selectivity of the new sensor provide an accurate and facile avenue for ultrasensitive ponceau 4 R detection in different samples.
研究领域:
分析化学
·
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
·
2015
·Vol. 162
·期 6
·H321
·
IF 3.266
Meiling Wang,Jianwei Zhao
A facile electrochemical sensor was fabricated via highly dispersing Multi-walled carbon nanotubes (MWCNTs) in ionic liquid-graphene oxides (IL-GO) "water" at room temperature. The introduction of IL (1-butyl-3-methylimidazolium hexafluorophosphate) to GO water resulted in the high dispersibility of MWCNTs and also caused fast electron transfer rates of the three dyes of Ponceau 4R (E124), Tartrazine (E102) and Allura red (E129) at the IL-GO-MWCNT composites modified glassy carbon electrode (IL-GO-MWCNT/GCE). Well-separated oxidation peaks and enhanced peak currents of Ponceau 4R, Allura red, and Tartrazine were observed at the IL-GO-MWCNT modified GCE. For individual detection, the linear responses of Ponceau 4R, Allura red, and Tartrazine were in the concentration ranges of 1.0 × 10−9-1.0 × 10−6, 8.0 × 10−10-5.0 × 10−7, and 1.0 × 10−8-1.0 × 10−6 mol L−1 with detection limits of 8.0 × 10−10, 5.0 × 10−10, and 7.0 × 10−9 mol L−1 (S/N = 3), respectively. For simultaneous determination by synchronous change of the concentrations of Ponceau 4R, Allura red, and Tartrazine, the linear response ranges were 8.0 × 10−9-1.5 × 10−7, 5.0 × 10−9-4.5 × 10−7 and 2.0 × 10−8-1.3 × 10−7 mol L−1 with the detection limits of 6.0 × 10−9, 3.0 × 10−9, and 1.0 × 10−8 mol L−1 (S/N = 3), respectively. The fabricated sensors were further applied for the detection of Ponceau 4R, Allura, red and Tartrazine in alcoholic beverages.
研究领域:
分析化学
·
食品科学
✓ 已验证
产品关联
DOI
高影响因子
Analytical Methods
·
2025
·
IF 2.6
Ming Zhong,Hao Zhang,Yajun Ren,Yuwei Sun,Mingyue Piao,Libin Han,Mingyue Jin,Honghui Teng
Glyphosate, a widely used organophosphorus herbicide in agriculture, poses potential threats to aquatic ecosystems and human health due to its long-term environmental persistence. This study presents a spectroscopic detection system based on a competitive reaction utilizing the Ponceau 4R (P4R)-Cu2+ complex. Leveraging glyphosate's high affinity for chelating copper ions, the method enables indirect, rapid, and visual quantitative analysis of glyphosate. In the presence of glyphosate, Cu2+ preferentially binds to it, causing the release of P4R and the restoration of its characteristic absorption spectrum, resulting in a measurable absorbance change at 505 nm. Systematic optimization of buffer pH, P4R concentration, Cu2+ concentration, and their ratio established the optimal detection conditions (120 μmol L−1 P4R, 120 μmol L−1 Cu2+, 40 mmol L−1 borate buffer, pH 9.0). Under these conditions, the method exhibited a good linear relationship within the concentration range of 5.9–295.8 μmol L−1 (R2 = 0.998). The limit of quantitation (LOQ) and limit of detection (LOD) were determined to be 14.0 μmol L−1 and 4.6 μmol L−1, respectively. This method was successfully applied to the analysis of spiked surface water samples and soils collected from the upper reaches of the Liao River, yielding average recoveries of 98.7–107.6% with relative standard deviations (RSDs) below 5%. Interference tests indicated that citric acid interference was manageable (recovery: 88.9%) when its concentration ratio to glyphosate was ≤2 : 1, while tartaric acid and oxalic acid required masking strategies to suppress their interference. This method, characterized by its simplicity, rapid response, and low instrumental dependence, provides reliable technical support for the rapid screening of glyphosate in environmental samples.
研究领域:
环境科学
·
分析化学
·
光谱学
·
水污染
·
除草剂检测
✓ 已验证
产品关联
DOI
PubMed
高影响因子
BIOSENSORS & BIOELECTRONICS
·
2023
·
IF 12.6
Yongfeng Chen,Yufeng Sun,Xiaomin Pang,Ruiqiang Wang,Geoffrey I.N. Waterhouse,Zhixiang Xu
Synthetic pigment Ponceau 4 R is a commonly used additive in the process of various foods. Due to its potential toxicity to humans, realizing high sensitivity and rapid detection of Ponceau 4 R is extremely important. In this study, we synthesized a novel dual-network magnetic conductive hydrogel (MCHG) via a simple one-pot low temperature stirring method. In MCHG, cationic guar gum (CGG) and β-cyclodextrin (β-CD) formed a primary three-dimensional network cross-linked by N, N-methylene bisacrylamide. A second network was formed in MCHG by CGG, β-CD and magnetite@carboxylate-terminated carbon nanotubes (Fe 3 O 4 @COOH-MWCNTs) through hydrogen bonding and electrostatic interactions . Fe 3 O 4 @COOH-MWCNTs enhanced cross-linking in the MCHG hydrogel, whilst also boosting the equilibrium adsorption capacity of Ponceau 4 R (61.8 mg g −1 ), electrical conductivity and electrocatalytic performance. Application of MCHG to a glassy carbon electrode (GCE) created a highly sensitive electrochemical sensor for the detection of Ponceau 4 R. Under optimized testing conditions, the sensor offered a very wide linear range (0.01–200.0 μM) and a low limit of detection (1.8 nM) for Ponceau 4 R. When the sensor was applied to the detection of Ponceau 4 R in spiked honey and liqueur samples, excellent recoveries were achieved (88.2%–107.0%). Furthermore, analyses of commercial biscuit and candy samples using the MCHG/GCE sensor and a national standard ultraviolet spectrophotometry method afforded identical results. Results demonstrate that multifunctional hydrogels show great promise as signal amplification agents in electrochemical detection of target compounds in foods.
研究领域:
分析化学
·
材料科学
·
食品科学
·
电化学
·
纳米技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
FOOD CHEMISTRY
·
2014
·
IF 3.259
Meiling Wang,Yunqiao Gao,Qian Sun,Jianwei Zhao
In the present work, a novel strategy based on new carbon nanotube (CNT) and polypyrrole (ppy) composite modified electrode for the simultaneous determination of the isomers of Amaranth (E123) and Ponceau 4R (E124) was proposed. Due to the increasing dispersibility and effective surface area of the CNT caused by decoration of ppy to the CNT, the proposed electrode exhibited excellent electrochemical sensitivity and high selectivity toward the oxidation of Amaranth and Ponceau 4R. The linear response ranges for Amaranth and Ponceau 4R were 5.0 × 10 −9 M–5.0 × 10 −7 M, and 8 × 10 −9 M–1 × 10 −6 M and corresponding detection limits as low as 5.0 × 10 −10 M and 1.0 × 10 −9 M, respectively. This proposed method was successfully applied in the detection of Ponceau 4R and Amaranth in fruit drink samples.
研究领域:
分析化学
·
食品科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Chemosensors
·
2020
·Vol. 8
·期 3
·70
·
IF 3.108
Zirong Qin,Jinyan Zhang,Ying Liu,Jingtao Wu,Guangli Li,Jun Liu,Quanguo He
In this work, we report a simple but efficient voltammetric sensor for simultaneous detection of ponceau 4R and tartrazine based on TiO2/electro-reduced graphene oxide nanocomposites (TiO2/ErGO). TiO2/ErGO nanocomposites were prepared by ultrasonically dispersing TiO2nanoparticles (TiO2NPs) into graphene oxide (GO) solution followed by a green in-situ electrochemical reduction. TiO2NPs were uniformly supported on ErGO nanoflakes, which provides a favorable interface for the adsorption and subsequent oxidation of target analytes. TiO2/ErGO showed remarkable electrocatalytic capacity for the oxidation of ponceau 4R and tartrazine, with minimized oxidation overpotentials and boosted adsorptive striping differential pulse voltammetric (AdSDPV) response peak currents. Under the optimal experimental conditions, the anodic peak currents of ponceau 4R and tartrazine increase linearly with the respective natural logarithm of concentrations from 0.01 to 5.0 μM. The detection limits (LOD = 3σ/s) for ponceau 4R and tartrazine are 4.0 and 6.0 nM, respectively. The extraordinary analytical properties of TiO2/ErGO/GCE are primarily attributed to the synergistic enhancement effect from ErGO nanoflakes and TiO2NPs. Moreover, the proposed TiO2/ErGO/GCE achieves reliable determination of ponceau 4R and tartrazine in orange juice with excellent selectively, reproducibility and stability. Together with simplicity, rapidness, and low cost, the proposed sensor demonstrates great potential for on-site detection of azo colorants.Keywords:ponceau 4R;tartrazine;TiO2;electro-reduced graphene oxide;voltammetric sensor
研究领域:
分析化学
·
食品科学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
FOOD CHEMISTRY
·
2023
·
IF 8.8
Jingjuan Wang,Juan Wu,Mimi Sun,Jing Bai,Xiangjie Bo
This study presents the first integrated electrochemical platform (IEP) with point-of-use and portable features for on-site determination of ponceau 4R (RP), amaranth (AM), and tartrazine (TZ) in food by integrating a mass-producible Pt nanoparticles/laser-engraved graphene (Pt NPs/LEG)-based sensing chip and a reusable electrochemical miniaturized workstation. The sensing chip utilizes Pt NPs/LEG with unique architectures as electrode material and exhibits desirable analytical performance towards RP, AM, or TZ with satisfied linear range (0.25–50 μM for RP, AM, and TZ), high sensitivity (7.29 μA μM −1 cm −2 , 7.18 μA μM −1 cm −2 , and 2.02 μA μM −1 cm −2 for RP, AM, and TZ, respectively) and low limit of detection (50 nM, 58 nM, and 204 nM for RP, AM, and TZ, respectively). The sensing chip shows excellent selectivity, high stability, outstanding reproducibility, and acceptable mechanical stability. IEP can be implemented to test RP, AM, or TZ in real samples with satisfactory accuracy and recoveries.
研究领域:
分析化学
·
纳米技术
·
食品科学
·
电化学
·
传感器
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）