WATER AIR AND SOIL POLLUTION
·
2021
·Vol. 232
·期 3
·1-14
·
IF 2.52
Pan Yuwei,Bu Zhuoyu,Li Xiang,Han Jiangang
This study presented the efficient removal of tartrazine, a typical biorefractory dye, in a heterogeneous photochemical Fenton-like system adopting Fe 0 and oxalate (Ox) (UV/Fe 0 /Ox). Only 47.4% tartrazine could be removed within 60 min with a UV/Fe 0 system. The addition of Ox could significantly enhance the removal of tartrazine to 72.4% within only 20 min with the UV/Fe 0 /Ox system. The effects of various factors, such as the Fe 0 dose (0–0.8 g/L), Ox dose (0–2 mM), initial pH (2–6), and initial tartrazine concentration (2–30 mg/L), on the removal of tartrazine were examined. Scanning electron microscopy (SEM), Fourier transform infrared (FTIR) spectroscopy, and Mossbauer spectroscopy were conducted to explore the mechanism by which oxalate enhances the performance of the UV/Fe 0 system. Ox could inhibit the formation of iron (hydro)xides on the Fe 0 surface, thus guaranteeing the reactivity of Fe 0 during the reaction. Compared with Fe 2 O 3 , FeS, and Fe 3 O 4 , Fe 0 was a good heterogeneous iron catalyst for the photolysis of tartrazine with the Ox system. Compared with H 3 PO 4 , nitrilotriacetic acid, and ethylenediaminetetraacetic acid, Ox was also a good photolysis chelating agent. The UV/Fe 0 /Ox system could also maintain fast tartrazine removal after five consecutive runs without the addition of Fe 0 , indicating the good stability of Fe 0 .
研究领域:
环境科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
RSC Advances
·
2015
·Vol. 5
·期 105
·86445-86452
·
IF 3.84
Zhenzhen Zhang,Lingling Wang,Xueyan Liu,Danfeng Zhang,Lei Zhang,Qi Li
A new micro-solid-phase extraction method based on a prestructured filter membrane was developed to facilitate simultaneous analysis of tartrazine (TA) and sunset yellow (SY) with high performance liquid chromatography (HPLC). A filter membrane impregnated with nano-Al2O3 particles was proposed as a new micro-solid-phase extraction (μ-SPE) device for the preconcentration of colorants in food. The method integrated isolation and concentration in one step, and the adsorbed colorants could be easily eluted from the filter membrane for HPLC analysis. This process does not involve any additional sample treatment. The method is facile and easy to operate. The method showed good linearity, with correlation coefficients >0.9982 in the range of 1.0–200.0 ng mL−1, and low limits of detection (0.10–0.20 ng mL−1). Finally, the recovery values were 86.9–124.0% for the colorants in various food samples. The results indicated that the developed method would be a novel method for rapid determination of TA and SY at trace levels in real samples.
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
Nanomaterials
·
2018
·Vol. 8
·期 12
·967
·
IF 3.504
Jia Song,Yuanyi Zhang,Yiqun Huang,Yuxia Fan,Keqiang Lai
In this work, surface-enhanced Raman spectroscopy (SERS) technology coupled with Ag nanowires was shown to be a promising tool in the detection of tartrazine in large yellow croaker for the first time. Ag nanowires with a uniform diameter were fabricated by an efficient and manageable polyol method. The partial least square model was established for the quantitative analysis of tartrazine, which showed a relatively high linear correlation between actual and predicted concentrations of standard tartrazine solutions. An optimal sample preparation method was also selected and used to extract tartrazine from large yellow croaker within 20 min. The lowest concentration detected was 20.38 ng/cm2, which fully meets the requirements of tartrazine testing in aquatic products. This study indicated that SERS technology combined with the as-prepared Ag nanowires could detect tartrazine sensitively and provide an easily operable and time-saving way to monitor tartrazine in large yellow croaker.Keywords:SERS;Ag nanowires;tartrazine;large yellow croaker
研究领域:
食品科学
·
分析化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
PLoS One
·
2020
·Vol. 15
·期 3
·e0230410
·
IF 2.74
Jin Dong Cho,Jaeman Son,Chang Heon Choi,Jin Sung Kim,Hong-Gyun Wu,Jong Min Park,Jung-in Kim
We investigated the influence of incorporating tartrazine on the dose response characteristics of radiochromic 3D dosimeters based on polyurethane resin. We use three types of polyurethane resins with different Shore hardness values: 30 A, 50 A, and 80 D. PRESAGE dosimeters are fabricated with different chemical components and concentrations. Tartrazine (Yellow No. 5) helps incorporate a yellow dye to fabricate the dosimeter. Elemental composition is analyzed with the Z eff . Three sets of six different PRESAGE dosimeters were fabricated to investigate the effects of incorporating yellow dye on the dose response characteristics of the dosimeter. The dose response curve was obtained by measuring the optical absorbance using a spectrometer and optical density using optical CT, respectively. The energy and dose rate dependences are evaluated for the dosimeter with the highest sensitivity. For the optical density measurement, significant sensitivity enhancements of 36.6% and 32.7% were achieved in polyurethane having a high Shore hardness of 80 D and 50 A by incorporating tartrazine, respectively. The same results were obtained in the optical absorbance measurements. The ratio of the Z eff of the dosimeter with 80 D Shore hardness to water was 1.49. The polyurethane radiochromic dosimeter with a Shore hardness of 80 D showed the highest sensitivity and energy and dose rate independence upon the incorporation of tartrazine.
研究领域:
医学物理
·
放射生物学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CRYSTENGCOMM
·
2025
·
IF 2.6
De-Sheng Wei,Jian Li,Ting-Ting Xu,Wan-Yi Lan,Nan Lv,Yu-Teng Zhang,Shuang-Bao Li
Fast ultrasound-assisted processes were utilized for the first time, to achieve the successful synthesis of two highly crystalline Zr-based metal-organic cages, namely ZrT-1 and ZrT-1-OH. Varying temperature and power level, the desired product was obtained after 5-8 minutes as crystalline particles with cubic shape (ca.2-8 μm). Furthermore, ultrasound-assisted synthesized ZrT-1 and ZrT-1-OH demonstrated exceptional performance for tartrazine adsorption. Under optimal conditions, their maximum adsorption capacities were determined to be 238.6 mg/g and 225.3 mg/g, respectively.
研究领域:
材料科学
·
环境科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
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