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All Journal Jurnal Pendidikan Sosiologi dan Humaniora Unesa Journal of Chemistry
Handayani, Suci Tri
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Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Education Energy Materials Science & Nanotechnology Social Sciences Other

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A SINTESIS KITOSAN DARI CANGKANG KERANG DARAH (Anadara granosa) SEBAGAI BIOSENSOR UNTUK DETEKSI PESTISIDA MENGGUNAKAN MEMBRAN Au/KITOSAN Pharnanda, Rossella; Prasetya, Predian Yudha; Handayani, Suci Tri; Fatehah, Aura Amalia; Basukiwardojo, Maria Monica Sianita
Unesa Journal of Chemistry Vol. 13 No. 1 (2024): Vol 13 No 1 (2024)
Publisher : Department of Chemistry, Faculty of Mathematics and Natural Sciences, Surabaya State University, located at Jl Ketintang, Surabaya, East Java, Indonesia

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Abstract

Pesticides are chemicals that can kill or control pests. However, the current use of pesticides poses a threat to humans and the environment. This research aims to develop a biosensor with Au/Chitosan membrane electrode using chitosan from blood clam shell waste which has high sensitivity to pesticides, fast response time, and long-term stability. So as to achieve the target of Sustainable Development Goals (SDG's) 3, namely health and well-being. The method used is the preparation of blood clam shells, synthesis of chitosan from blood clam shells, making Au/Chitosan membrane electrodes, characterisation of pesticide detection biosensors. The results of FTIR testing of chitosan obtained a degree of deacetylation of 86.3202%. The successfully made Au/Chitosan membrane electrode has an optimum concentration of 5% with the best measurement at pH 7, deposition time of 5 seconds, and scan rate of 0.1 V/s.  Characterisation of carbamate pesticide detection biosensor using Au/Kitosan electrode shows that the Nernst factor obtained is 35.46 mV/decade, detection limit is 2x10 -8 M, measurement range is 10-8 M to 10-2 M, response time is 5-7 minutes, and precision with coefficient of variation for 10-4 M and 10-2 M concentration is 1.095% and 0.412% so that the Au/Chitosan membrane electrode can be used to detect carbamate pesticides effectively.
MODAL SOSIAL PELAKU USAHA IKAN BAKAR KAPIEK NDAK BATULANG DI DESA PULAU JAMBU KECAMATAN KUOK KABUPATEN KAMPAR Handayani, Suci Tri; Marnelly, T. Romi; Resdati, Resdati
Jurnal Pendidikan Sosiologi dan Humaniora Vol 13, No 2 (2022): Edisi Oktober 2022
Publisher : Universitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/j-psh.v13i2.57491

Abstract

This research was conducted in Pulau Jambu Village, Kuok Subdistrict, Kampar Regency with the aim of knowing: 1) Elements of social capital and 2) Strategy in the Kapiek Ndak Batulang   grilled fish business in Pulau Jambu Village. This research uses descriptive qualitative research method by taking 5 people as main informants and 1 people as key informants (Key Informants). This study uses purposive sampling technique through data collection techniques using observation, interviews, and documentation. The theory used is the theory of social capital. The results of research in the field can be concluded that there are 3 elements of social capital in the Kapiek Ndak Batulang   grilled fish business in Pulau Jambu Village, namely network, trust, and social norms. Among these 3 elements each has a level of social capital, namely the strong, medium, and weak categories. Among the 3 most powerful elements of social capital is the element of trust social capital. This social capital is very very influential on fellow sellers, suppliers of Kapiek fish, customers/buyers, and employees. If social capital is strong, the benefits will be large. The results of the research regarding the strategy in the Kapiek Ndak Batulang   grilled fish business there are 4 strategies, namely biological investment strategies, successive strategies, educational strategies, and economic investment strategies. Among the 4 strategies, the most dominant one used by business actors is the educational strategy. By always wanting to learn so that business actors can run their business well and survive until now.
Co-Authors Fatehah, Aura Amalia Maria Monica Sianita Basukiwardojo Pharnanda, Rossella Prasetya, Predian Yudha Resdati T. Romi Marnelly