TY - CHAP A1 - Heinrich, Moritz A1 - Stollfuss, Carsten A1 - Jacobs, Hannes A1 - Di Vona, Maria Luisa A1 - Pizzoferrato, Roberto A1 - Foitzik, Andreas ED - Stolzenburg, Frieder ED - Reinboth, Christian ED - Lohr, Thomas ED - Vogel, Kathleen T1 - A conductivity-based, batch-optimized system for analyzing the total of carbon parameter in water T2 - NWK 2023 - Tagungsband zur 23. Nachwuchswissenschaftler*innenkonferenz N2 - In cooperation with the company Purification Membranes Analytics GmbH (PMA), a prototype has been developed that analyzes the total organic carbon (TOC) content of water samples based on a complex conductivity measurement. In the process, a batchoptimized system was developed that delivers qualitative results even in highly polluted waters. This method requires small sample volumes and was assembled using an ultrapure water system, a sample mixing system, various electronic control units and a miniTOC system that uses a UV light source to decompose organic carbons and outputs differential values using two conductivity sensors. During the project, a fully automated prototype was developed and is ready for use. In the future, this method could support common methods and lead to more accurate statements on water quality in a cost-effective manner. Y1 - 2023 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:526-opus4-18598 UR - https://www.hs-harz.de/nwk2023/tagungsband-nwk-2023 UR - https://www.hs-harz.de/dokumente/extern/Forschung/NWK2023/Beitraege/A_conductivity-based__batch-optimized_system_for_analyzing_the_total_of_carbon_parameter_in_water.pdf SN - 2627-5708 SP - 15 EP - 20 PB - Hochschule Harz CY - Wernigerode ER - TY - CHAP A1 - Heinrich, Moritz A1 - Jacobs, Hannes A1 - Di Vona, Maria Luisa A1 - Pizzoferrato, Roberto A1 - Foitzik, Andreas T1 - A Test System for Safely Measurements of Cancer-Inducing UV-C Diodes Produced in a Simple and Cost-Effective Way by Rapid Prototyping T2 - Open Conference Proceedings N2 - New technologies leading to better and more efficient light emitting diodes. The emitted radiation reaches higher energy levels and lower wavelengths especially in the UV-C spectrum. UV-C light has a cancer inducing effect on human cells. Therefore it is necessary to work in a safe way with those devices. This work is focused on an open-source solution for rapid 3D printing of an safe UV-C radiation measuring device. Especially for research groups or universities which can not afford big safety labs. After modeling and printing the prototype, a series of tests has shown the functionality of that UV-C Diode test system. By using black printing filaments and infill rates over 50 %, the transmission of light could be prevented and the system worked well. KW - 3D printing KW - rapid prototyping KW - UV C LED KW - secure measurement KW - validate LED KW - UV-C KW - radiation mesaurement Y1 - 2022 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:526-opus4-17682 VL - 2 SP - 197 EP - 199 PB - TIB Open Publishing ER -