Phytic acid and phytate anions are among the principal reserves of phosphorus. A few methods have been used for their detection, but these methods require harsh conditions. In this work, graphene quantum dots are successfully synthesized by Opuntia sp. extract through a pyrolysis microwave treatment. This green synthesis method allows us to controllably obtain nanostructures with excellent dispersion and a narrow size distribution to use for detecting phosphates and phytic acid and amplifying fluorescence quenching at pH = 8.8. Their application allows for a one-step turn-off system. The quenching percentage for phytic acid (PA) detection is 53%, and the quenching percentages are 26 and 21% for sodium phosphate monobasic (SPMB) and sodium phosphate dibasic (SPDB), respectively. The Stern-Volmer analysis shows that static and dynamic quenching mechanics contribute to phytic acid quenching.

植酸和植酸阴离子是磷的主要储备。已经使用了几种方法进行检测，但是这些方法需要苛刻的条件。在这项工作中，Opuntia成功地合成了石墨烯量子点sp。提取物通过热解微波处理。这种绿色合成方法使我们能够可控地获得具有出色分散性和窄尺寸分布的纳米结构，可用于检测磷酸盐和植酸并放大pH = 8.8时的荧光猝灭。他们的应用程序允许一站式关闭系统。植酸（PA）检测的猝灭百分比为53％，磷酸二氢钠（SPMB）和磷酸氢二钠（SPDB）的猝灭百分比分别为26％和21％。Stern-Volmer分析表明，静态和动态猝灭机制有助于植酸猝灭。