scholarly journals New automated method for macrocontaminant analysis: Industrial applications

TAPPI Journal ◽  
2017 ◽  
Vol 16 (11) ◽  
pp. 623-631
Author(s):  
SYLVIE OSSARD ◽  
PATRICK HUBER ◽  
PASCAL BOREL ◽  
DAVY SOYSOUVANH ◽  
THIERRY DELAGOUTTE
Keyword(s):  
Near Infrared ◽  
Raw Materials ◽  
Process Analysis ◽  
Industrial Applications ◽  
Recycled Paper ◽  
Automated Method ◽  
On Line ◽  
Industrial Samples

In recycled paper processes, stickies are the origin of many production disturbances. In this paper, we present how the recently developed method for macrocontaminant analysis was used with industrial samples for process analysis. The new automated stickies measurement method allows (i) determination of the threedimensional (3D) morphology of screened particles (without any deformation) and (ii) classification of the particles as stickies among contaminants. This is achieved by a combination of laser triangulation and local near-infrared spectroscopy (NIR). Measurement of macrocontaminants in pulp samples and their classification allow meaningful evaluation of their specific removal. Chemical nature and amount of the macrocontaminants coming from different raw materials were studied and were shown to be very different in two different mills. In an Asian mill, a low removal of pressuresensitive adhesives (PSAs) in the process (46%) was found in comparison with high removal of other stickies (99%). Applications of this device are shown, while the new on-line sensor for macrocontaminant analysis is being developed.

scholarly journals CERTIFICATION OF VEGETABLE OILS AND QUALITY CONTROL IN THE TECHNOLOGICAL PROCESS OF PRODUCTION

2019 ◽  
Vol 2019 (4) ◽  
pp. 119-126
Author(s):  
CH Bekmurotov ◽  
Keyword(s):  
Quality Control ◽  
Technological Process ◽  
Vegetable Oils ◽  
Raw Materials ◽  
Cottonseed Oil ◽  
Product Classification ◽  
Cotton Seeds ◽  
The Cost

The article reviewed the certification and quality control of the technological process for the production of vegetable oil. There is a procedure for packaging, quality control of products, determination of quality indicators and quality control of finished products. The procedure for using refined cottonseed oil and its varieties, the requirements for placement and storage of vegetable oils, as specified in the regulatory documents, the quality control of vegetable oils and other solutions for cottonseed oil are provided. The gas analyzer shows a solution for measuring the amount of solution by painting the tubes of a mixture of gas and air in oil. Detailed information on the production of vegetable oils, the cost of raw materials, the level of fat content of cotton seeds and the methods used to produce oil from cotton seeds. Methods for certification of vegetable oils, types of quality control, methods of testing and quality determination are presented. It was shown that the procedure for refined production of cottonseed oils and their types, as well as the state of the product classification of products based on the method of producing vegetable oils for consumer purposes, analysis of the sequence of refined oils and refining processes.

An Automated Method for the Continuous Determination of Total Sodium in Fuel Oil

1978 ◽  
Author(s):  
L. P. Giering
Keyword(s):  
Gas Turbines ◽  
Fuel Oil ◽  
Reliable Measurement ◽  
Continuous Analysis ◽  
Automated Method ◽  
Fuel Oils ◽  
On Line ◽  
Total Sodium ◽  
Continuous Determination

Fuel oils are frequently contaminated with sodium salts. Users of gas turbines are concerned with the level of sodium in fuel because of the deleterious effects to the turbine. Until recently, on-line continuous methods of analysis did not reliably measure the total sodium in a given fuel. A method is described for the continuous analysis of total sodium present in fuel oils regardless of its chemical form. A small amount of surfactant, “Liquid G” is added to the fuel, and the total sodium in the resulltant solution is determined by flame photometry. The method described provides for the continuous and reliable measurement of sodium in fuel.

Industrial Applications of Near-Infrared Chemical Imaging Microscopy

2001 ◽  
Vol 7 (S2) ◽  
pp. 162-163
Author(s):  
EN Lewis ◽  
LH Kidder ◽  
KS Haber
Keyword(s):  
Spatial Distribution ◽  
Near Infrared ◽  
Imaging System ◽  
Raw Materials ◽  
Single Point ◽  
Nir Spectroscopy ◽  
Chemical Imaging ◽  
Industrial Applications ◽  
Chemical Information ◽  
Spatially Resolved

Single point near-infrared (NIR) spectroscopy is used extensively for characterizing raw materials and finished products in a wide variety of industries: polymers, paper, film, pharmaceuticals, paintings and coatings, food and beverages, agricultural products. As advanced industrial materials become more complex, their functionality is often determined by the spatial distribution of their discrete sample constituents. However, conventional single point NIR spectroscopy cannot adequately probe the interrelationship between the spatial distribution of sample components with the physical properties of the sample. to fully characterize these samples, it is necessary to probe simultaneously spatial and chemical heterogeneity and correlate these properties with sample characteristics.Recently, we have developed a novel NIR imaging spectrometer that can deliver spatially resolved chemical information very rapidly. in contrast to conventional, single point NIR spectrometers, the imaging system uses an infrared focal-plane array (FPA) to collect up to 76,800 complete spectra, one for each pixel on the array, in approximately one minute.

On-Line Fat Content Classification of Inhomogeneous Pork Trimmings Using Multispectral near Infrared Interactance Imaging

2010 ◽  
Vol 18 (2) ◽  
pp. 135-145 ◽  
Author(s):  
Marion O'Farrell ◽  
Jens Petter Wold ◽  
Martin Høy ◽  
Jon Tschudi ◽  
Helene Schulerud
Keyword(s):  
Near Infrared ◽  
Fat Content ◽  
Content Classification ◽  
On Line

On-line non-destructive determination of proteins and infiltrated fat in Iberian pork loin by near infrared spectrometry with a remote reflectance fibre optic probe

2002 ◽  
Vol 453 (2) ◽  
pp. 281-288 ◽  
Author(s):  
Inmaculada González-Martı́n ◽  
Claudio González-Pérez ◽  
Jesús Hernández-Méndez ◽  
Noelia Alvarez-Garcı́a ◽  
José-Luis Hernández Andaluz
Keyword(s):  
Near Infrared ◽  
Infrared Spectrometry ◽  
Fibre Optic ◽  
Fibre Optic Probe ◽  
On Line ◽  
Near Infrared Spectrometry ◽  
Pork Loin ◽  
Optic Probe ◽  
Non Destructive

scholarly journals A Simple Automated Method for the Determination of Nitrate and Nitrite in Infant Formula and Milk Powder Using Sequential Injection Analysis

2011 ◽  
Vol 2011 ◽  
pp. 1-7 ◽  
Author(s):  
Mariela Pistón ◽  
Alicia Mollo ◽  
Moisés Knochen
Keyword(s):  
Milk Powder ◽  
Sequential Injection Analysis ◽  
Sequential Injection ◽  
Liquid Form ◽  
Automated Method ◽  
Nitrate Determination ◽  
On Line ◽  
Nitrate And Nitrite ◽  
User Friendly

A fast and efficient automated method using a sequential injection analysis (SIA) system, based on the Griess, reaction was developed for the determination of nitrate and nitrite in infant formulas and milk powder. The system enables to mix a measured amount of sample (previously constituted in the liquid form and deproteinized) with the chromogenic reagent to produce a colored substance whose absorbance was recorded. For nitrate determination, an on-line prereduction step was added by passing the sample through a Cd minicolumn. The system was controlled from a PC by means of a user-friendly program. Figures of merit include linearity (r2> 0.999 for both analytes), limits of detection (0.32 mg kg-1NO3-N, and 0.05 mg kg-1NO2-N), and precision (sr%) 0.8–3.0. Results were statistically in good agreement with those obtained with the reference ISO-IDF method. The sampling frequency was 30 hour-1(nitrate) and 80 hour-1(nitrite) when performed separately.

Automated Method for Determining Amylase Activity in Serum and Urine

1973 ◽  
Vol 19 (10) ◽  
pp. 1187-1192 ◽  
Author(s):  
A Mazzuchin ◽  
C Weggel ◽  
C J Porter
Keyword(s):  
Amylase Activity ◽  
Water Soluble ◽  
Standard Curve ◽  
The Past ◽  
Automated Method ◽  
Wide Range ◽  
On Line ◽  
Starch Substrate ◽  
Suspended Substrate

Abstract We describe an automated procedure for determination of α-amylase activity in serum or urine by use of a water-insoluble chromogenic starch substrate (commercially available). "AutoAnalyzer" (Technicon Corp.) equipment is used in which the sample and suspended substrate are introduced simultaneously into the flow system. After incubation at 37 °C the water-soluble blue-starch breakdown products are filtered on-line across a cellulose nitrate membrane. Absorbance is measured at 630 nm, and the α-amylase activity read from a standard curve. The automated procedure has been in use for the past year and has been found to be an operationally simple, reproducible, and reliable method, which can be applied over a wide range of enzyme activity. Results of comparative studies with other α-amylase methods are also described.

Sign in / Sign up

Export Citation Format

Share Document