scholarly journals Effect on human health by residues of commonly used pesticides in vegetables cultivation

2020 ◽  
Vol 19 (2) ◽  
pp. 47-54
Author(s):  
Farzana Khalil ◽  
Maliyat Tarannum Maruf ◽  
Mohammad Tariqul Islam ◽  
Mohammad Mahbub Rabbani ◽  
S. Mosaddeq Ahmed
Keyword(s):  
Human Health ◽  
Pesticide Residue ◽  
Educational Level ◽  
Room Temperature ◽  
Adsorption Chromatography ◽  
Market Condition ◽  
Agricultural Fields ◽  
Quechers Method ◽  
Harvest Intervals ◽  
Dissipation Pattern

People in Bangladesh are over scared for toxicity of vegetables & fruits because of the educational level of the farmers is not up to the mark, farmers apply pesticides randomly on agricultural fields without maintaining pre-harvest intervals and dose. The aim of this work was to study dissipation pattern of some pesticides in some vegetables kept at room temperature which represent market condition and to identify and quantify pesticides applied on some vegetables. By interviewing the farmers three commonly used pesticides; cypermethrin, chlorpyrifos and fenvalerate were sprayed in the farmer’s fields of the western part of Bangladesh. Samples were extracted by QuEChERS method, cleaned-up by adsorption chromatography technique, and analyzed by GC-ECD. Recoveries were found to be between 87-107% with RSD lower than 10% at three spiking levels. Matrix matched calibration curves were linear for all the analytes with r2 ≥ 0.99. LODs were found to be 0.01 mg/kg for cypermethrin and 0.002 mg/kg for both of fenvalerate and chlorpyrifos. The samples of same cultivar’s variety were purchased from the markets of Savar, Mymemsingh and Cumilla. Our finding showed only the presence of cypermethrin in tomato but the values were below MRL and no pesticide residue was found in eggplant.

scholarly journals Trapping liquid drugs inside crystals

2014 ◽  
Vol 70 (a1) ◽  
pp. C984-C984
Author(s):  
Alessia Bacchi ◽  
Davide Capucci ◽  
Paolo Pelagatti
Keyword(s):  
Human Health ◽  
Crystal Engineering ◽  
Room Temperature ◽  
The Body ◽  
New Materials ◽  
Active Molecule ◽  
Crystalline Materials ◽  
Pharmaceutical Ingredients ◽  
Solid Dosage ◽  
Intellectual Properties

The objective of this work is to embed liquid or volatile pharmaceuticals inside crystalline materials, in order to tune their delivery properties in medicine or agrochemistry, and to explore new regulatory and intellectual properties issues. Liquid or volatile formulations of active pharmaceutical ingredients (APIs) are intrinsically less stable and durable than solid forms; in fact most drugs are formulated as solid dosage because they tend to be stable, reproducible, and amenable to purification. Most drugs and agrochemicals are manufactured and distributed as crystalline materials, and their action involves the delivery of the active molecule by a solubilization process either in the body or on the environment. However some important compounds for the human health or for the environment occur as liquids at room temperature. The formation of co-crystals has been demonstrated as a means of tuning solubility properties of solid phases, and therefore it is widely investigated by companies and by solid state scientists especially in the fields of pharmaceuticals, agrochemicals, pigments, dyestuffs, foods, and explosives. In spite of this extremely high interest towards co-crystallization as a tool to alter solubility, practically no emphasis has been paid to using it as a means to stabilize volatile or labile or low-melting products. In this work we trap and stabilize volatile and liquid APIs and agrochemicals in crystalline matrices by engineering suitable co-crystals. These new materials alter the physic state of the active ingredients allowing to expand the phase space accessible to manufacturing and delivery. We have defined a benchmark of molecules relevant to human health and environment that have been combined with suitable partners according to the well known methods of crystal engineering in order to obtain cocrystals. The first successful results will be discussed; the Figure shows a cocrystal of propofol, a worldwide use anesthetic.

SnS2/MXene derived TiO2 hybrid for ultra-fast room temperature NO2 gas sensing

2021 ◽  
Author(s):  
Tianding CHEN ◽  
Wenhao YAN ◽  
Ying WANG ◽  
Jinli Li ◽  
Haibo Hu ◽  
...  
Keyword(s):  
Nitrogen Dioxide ◽  
Human Health ◽  
Room Temperature ◽  
Gas Sensing ◽  
Air Pollutant

Nitrogen dioxide (NO2) is a prominent air pollutant that is harmful to both the environment and human health. Conventional NO2 sensors that are designed to operate at room temperature often...

Thiol-mediated etching of gold nanorods as a neoteric strategy for room-temperature and multicolor detection of nitrite and nitrate

2021 ◽  
Author(s):  
Marzieh Sepahvand ◽  
Forough Ghasemi ◽  
Hossein Mirseyed Hosseini
Keyword(s):  
Human Health ◽  
Gold Nanorods ◽  
Room Temperature ◽  
Scientific Communities ◽  
Negative Impacts ◽  
Living Organisms

The excessive presence of nitrite and nitrate in the environmental matrixes has raised concerns among the scientific communities due to their negative impacts on human health and living organisms. Considering...

Multi-pesticide residue analysis by high resolution mass spectrometry in complementary matrices: wheat flour, lettuce and apple samples

2018 ◽  
Vol 10 (32) ◽  
pp. 3958-3967 ◽  
Author(s):  
Marilda Chiarello ◽  
Sidnei Moura
Keyword(s):  
Mass Spectrometry ◽  
High Resolution ◽  
Human Health ◽  
Pesticide Residue ◽  
Pesticide Residues ◽  
High Resolution Mass Spectrometry ◽  
Residue Analysis ◽  
Food Contamination ◽  
Pesticide Residue Analysis ◽  
Resolution Mass

Nowadays, food contamination with pesticide residues is prevalent, which can cause problems to human health.

Evaluation of an alternative fluorinated chitosan as a QuEChERS adsorbent for pesticide residue analysis in apple samples

2019 ◽  
Vol 11 (27) ◽  
pp. 3460-3466 ◽  
Author(s):  
Qilin Deng ◽  
Liping Sun ◽  
Tao Zhu
Keyword(s):  
High Performance Liquid Chromatography ◽  
Liquid Chromatography ◽  
Pesticide Residue ◽  
Pesticide Residues ◽  
High Performance ◽  
Residue Analysis ◽  
Pesticide Residue Analysis ◽  
Quechers Method

In this study, a new and green fluorinated chitosan (trifluoroethyl methacrylate-chitosan (TFEMA-CTS)) was synthesized, and the QuEChERS method was applied for the effective determination of four pesticide residues in apple samples by high performance liquid chromatography.

Complete oxidation of formaldehyde over a Pd/CeO2 catalyst at room temperature: tunable active oxygen species content by non-thermal plasma activation

2020 ◽  
Vol 10 (18) ◽  
pp. 6257-6265
Author(s):  
Kai Li ◽  
Jian Ji ◽  
Miao He ◽  
Haibao Huang
Keyword(s):  
Human Health ◽  
Thermal Plasma ◽  
Room Temperature ◽  
Active Oxygen Species ◽  
Active Oxygen ◽  
Complete Oxidation ◽  
Oxygen Species ◽  
Plasma Activation ◽  
Indoor Pollutant ◽  
Non Thermal Plasma

Formaldehyde is a main indoor pollutant and its removal is essential to protect human health and meet strict environmental regulations.

scholarly journals Pengaruh CdCl2 terhadap Produksi Eksopolisakarida dan Daya Hidup Azotobacter

2012 ◽  
Vol 12 (1) ◽  
pp. 34 ◽  
Author(s):  
Reginawanti Hindersah ◽  
Dedeh Hudaya Arief ◽  
Soetijoso Soemitro ◽  
Lukman Gunarto
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Liquid Medium ◽  
Human Health ◽  
Contaminated Soil ◽  
Room Temperature ◽  
Gravimetric Method ◽  
Soil Bioremediation ◽  
Toxic Heavy Metals ◽  
Toxic Heavy Metal

The contamination of toxic heavy metal Cadmium (Cd) in soils will be endanger the human health because it ismore available comparing to another toxic heavy metals. One method of Cd-contaminated soil bioremediation isusing exopolysachharide-producing bacteria Azotobacter. Exopolysachharides (EPS) can mobilize Cd through theformation of complex Cd-EPS which sequentially can increase the availability of Cd for plants uptake. A laboratoryexperiment has been done to study the EPS production and the viability of six Azotobacter isolates in the liquidculture containing 0.01, 0.1, and 1 mM CdCl2. The bacteria were cultured in liquid medium with and without CdCl2 for72 hours at room temperature. The EPS production was determined by gravimetric method after precipitationusing acetone and centrifugation at 7000 rpm. The result was that all of Azotobacter isolates produce EPS in thepresence of CdCl2. In the culture with 1 mM CdCl2, the density of Azotobacter sp. isolate BS3, LK5, LKM6 increasedsignificantly, and that of isolate LH16 decreased. No significant effect of CdCl2 on the density of isolate BS2 andLH15. This research suggested that some Azotobacter isolates were relatively resistence to the Cd and could bedeveloped as biological agents in Cd-contaminated soil bioremediation.

scholarly journals Characteristics of Guava (Psidium guajava L.) Treated With Ozonation During Ambient Storage

2017 ◽  
Vol 2 (6) ◽  
pp. 448
Author(s):  
Imas Siti Setiasih ◽  
Tita Rialita ◽  
Debby M. Sumanti ◽  
In-in Hanidah
Keyword(s):  
Vitamin C ◽  
Moisture Content ◽  
Pesticide Residue ◽  
Room Temperature ◽  
Psidium Guajava ◽  
Ozone Treatment ◽  
Physical Chemical ◽  
Microbiological Characteristics ◽  
Ambient Storage ◽  
Ozonation Process

Crystal guava (Psidiumguajava L.) is a kind of fruit which easily damaged due to various factors.  Without proper treatment, crystal guava will  had  physical  damages.  The  aims  of  this study were to  determine  the  differences  in  physical, chemical,  microbiological  characteristics, and pesticide residue  between  crystal guava treated and untreated in ozone.  Ozonation  process was conducted by using ozonizer TIP-01 at the  concentration of 1.1 ppm for 5 minutes, and stored at room temperature (25± 2 0C) observed for 6 days with 2 replicates.  The explanatory methods was employed followed  by t-test.  The  characteristics  observed  were  color lightness,  hardness,  vitamin  C  content,  moisture  content,  totally  microorganism, and  pesticide residue.   The  results  showed  that after storage  for  6  days  at   room  temperature,  the  ozone  treatment  reduced  the lightness, hardness, vitamin C content, totally   microorganism,  and  pesticide residue,  while  moisture  content  increased.Keywords:  guava; ozone;  ambient storage

The Impacts of Industrial Effluent Discharge on Agricultural Fields

2018 ◽  
Vol 9 (06) ◽  
pp. 20240-20245
Author(s):  
Amusat Mudasiru Abiodun ◽  
Taiwo Adewale Mathew ◽  
Ogundele Olusegun Michael ◽  
Ademiluyi Yinka Segun
Keyword(s):  
Heavy Metals ◽  
Human Health ◽  
Industrial Effluent ◽  
Descriptive Statistics ◽  
Agricultural Fields ◽  
Microsoft Excel ◽  
Standard Procedures ◽  
Safe Limits ◽  
Effluent Discharge ◽  
The Impact

The aim of this study is to assess the impact of agricultural industrial effluent discharge on agricultural fields. Soil and crops samples from industrial effluent irrigated agricultural fields were collected from 5 locations in Ilorin, Kwara State between March and August, 2017. Soil and crop samples were analysed for heavy metals (Zinc, Copper, Iron, Lead, Manganese, Cadmium, and Chromium) using the standard procedures. Data collected were analysed for simple descriptive statistics using the Microsoft Excel Package. Results showed Zn level concentration in agricultural produces from in Farms 3 - 5 were found to be in the range of 0.08-0.3 mgkg-1 `falling within the WHO/FAO safe limits of 0.60 mgkg-1. Crop samples collected from Farms 1 & 2 showed the Zn levels higher than the WHO/FAO permissible limit. The concentrations of Cu, Zn, Fe and Cd in agricultural produces were found within the permissible limits of the WHO. The order of accumulation of heavy metals by the agricultural produces were Ewedu > Garden Egg > Flute Pumpkin > Maize > Okro. The consumption of agricultural produces study farms 1 and 2 may pose serious danger to human health. This study recommends treatment of industrial effluent before discharge into the agricultural lands.

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